If the scientist finds the frequency for recessive alleles to be 0.75, then she could expect the frequency for the dominant allele to be 0.25.
According to Hardy Weinberg equilibrium principle, the genetic variations like genotypes and frequencies of the alleles would remain constant from one generation to another in the absence of disturbing external factors. These disturbing factors can be mutations, selective mating, natural selection, gene flow and genetic drift. All of these factors disturb the equilibrium by introducing external alleles, thus suppressing the ability of an organism to carry its own alleles to the next generation.
In the absence of the disturbing factors, the allele frequencies (taken as p and q) are always constant, and would be equal to 1. This means that:
p + q = 1
Where p denotes recessive allele frequency while q denotes dominant allele frequency. If p = 0.75, then q would be:
q = 1 - 0.75 = 0.25.
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Which of the following terms describe both Osmosis and Diffusion?
Select all that apply.
Group of answer choices
Active Transport
Uses ATP
Passive Transport
Facilitated Diffusion
Moves to equilibrium
Answer:
Passive transport.
Moves to equilibrium.
Explanation:
They don't use ATP.
They are not active processes.
Passive Transport, and Moves to Equilibrium can be used describe both Osmosis, and Diffusion.
Osmosis- When a material passes through a semipermeable barrier to balance the quantities of another substance, this process is known as osmosis. Depending on the amount of a solute, such as salt, a solvent like water will often flow into or out of a cell in biology.
Diffusion- The transfer of a chemical from the a region of high concentration to one of low concentration is known as diffusion. When particles in liquids and gases collide randomly and disperse, this is known as diffusion. For living organisms, diffusion is a crucial process because it governs the passage of materials from and to cells.
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Which part of the mollusk body is specialized for burrowing,feeding , and movement
Answer:
The foot
Explanation:
Mollusks have bilateral symmetry and are coelomed protostomes, but the coelom is only represented by small residual spaces around the pericardial cavity, the gonads, some parts of the nephridia, and in some cases part of the intestine. The foot is used primarily as a means of movement. The foot is also a very important structure, although it has adapted differently depending on the classes of mollusks. It is characterized by having a really powerful and complex musculature. The most widespread use of this organ is that of locomotion, as happens with gastropods. However, in bivalves it serves to burrow or in cephalopods it helps to provide propulsion.
Invertebrate animals with the unsegmented soft body which is enclosed in shells made up of calcium carbonate are called Mollusca.
The part of mollusk's specialized in feeding, burrowing and movement are:
Foot
The Mollusca can be explained as:
The Mollusca have the bilateral type of symmetry and coelomate protostomes which are visible as residual spaces surrounding the pericardial cavity, nephridia and gonads.The foot is the part that is used in locomotion and is adapted differently for various purposes in various forms of Mollusca.It has a complex musculature and helps in propulsion, as a mode of feeding appendage and in some for burrowing purposes.Therefore, the foot is a specialized organ.
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what did you learn about climate change new words new ideas new conepts
What phase of the cell cycle does DNA replication occur?
a
G1
b
S
c
G2
d
M
e
cytokinesis
Answer:
s phase
Explanation:
so the genetic material can double before it begins division
What types of things is “medicinal marijuana” prescribed for?
Help
Answer:
anxiety
pain
Explanation:
Pain is the main reason medicinal marijuana is prescribed. It could also be prescribed to treat Crohn’s disease, Seizure disorders, nerve pain, muscle spasms caused by multiple sclerosis, or nausea from chemotherapy.
Differences between epithelial and meristematic tissue.
Answer: Epithelial tissue is the internal and external lining of the surfaces of organs. Connective tissue connects tissues and organs.
Explanation: Good Luck!
Answer:
1. A tissue which covers body surfaces such as lining of organs and skin, and tissue which plays role in secretion, protection and absorption is referred as Epithelial tissue.
A tissue which is composed of fibers, water, and adhesion proteins and which connects parts of body together, this is referred as Connective tissue.
2.It lines organ surfaces, the cavity, and blood vessels of the animal body.
It connects, and supports different organs and tissue in the body.
what directs the action of every cell in your body
Answer:
the nucleus of the cell
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4. What is an energy pyramid? Why is there a loss of energy at each level
moving up?
Answer:
#1 An ecological pyramid is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem. And #2 Most of the food energy that enters a trophic level is "lost" as heat when it is used by organisms to power the normal activities of life. Thus, the higher the trophic level on the pyramid, the lower the amount of available energy.
Explanation:
the capacity of a brain area to develop new neural pathways as it adjust to good and bad experinces is known as
The capacity of a brain area to develop new neural pathways as it adjust to good and bad experiences is known as Neuroplasticity.
Neuroplasticity also known as brain plasticity is defined as the ability of the nervous system to change its function and develop new pathways in response to new information.
Neuroplasticity is the changes that happen to the brain over the years. These changes depend on the new experiences which can be good or bad. It also depends on environmental influences, practice, and psychological stress.
Neuroplasticity play an important role for healthy development, learning, memory.
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The capacity of a brain area to develop new neural pathways as it adjusts to good and bad experiences is known as neuroplasticity
Neuroplasticity is a broad term related to the brain's capacity to alter, modify, and adapt its function and structure across people's lives and in response to stimuli.
Individual differences in brain function and structure contribute to the variability observed in neuroplasticity mechanisms, which also show significant differences across individuals. Indeed, a growing body of recent research indicates that the guidelines and mechanisms governing cortical plasticity seem more dynamic than previously thought.
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What is the per capita growth rate of a population of 250, with 50 births and 80 deaths in a year?
The survival of a species depends on its ability to adapt to changes in the environment. A species must be capable of surviving and reproducing despite changes to food sources, climate, or threats from predators. Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment?
Mutations are always passed on to subsequent generations of the species
Mutations lead to genetic variation
Mutations are the cause of disease in the species
Mutations are not harmful when they occur in somatic cells of a species
Answer:
Your answer is B) Mutations lead to genetic variation.
Think of it like this, when rays were first starting to develop, they probably started with only one kind, stingless. Somewhere down the line, the genes of the rays started to mutate and eventually, there were stingrays and stingless rays. Now at this point there are predators that frequently feast upon the rays, so which of the two rays are more likely to defend themselves, and get away to live long enough to reproduce and pass on their genes? The stingrays! The mutation that may have occurred millions of years ago, has determined which organisms were more fit for a changing environment.
The survival of the species depends on the resources available and environmental conditions. The species or organisms capable to adapt to the surrounding have higher chances of reproduction and survival.
The correct answer is:
Option B: Mutations lead to genetic variation
The organisms adapting to the surrounding will undergo an alteration in their genetic sequence, known as mutations. The mutations are heritable and lead to genetic variation.
The mutation leads to genetic variation as:
It leads to the introduction of new alleles in the gene pool.Sexual reproduction and random mating also contribute to genetic variation. The mutations are heritable, and thus can cause an increase in the frequency of the mutated allele in the gene pool.
Thus, the correct answer is that mutation leads to genetic variation.
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environmental factor in fresh water, ocean trench, hot springs, terrestrial and problems caused for each
Answer:
sorry don't know but I need points plese mark me as brainlest
Explanation:
I want free points
classify each electrolyte as an intracellular or extracellular anion (negatively charged ion) or cation (positively charged ion).
Electrolytes are substances that, when dissolved in water, conduct electricity. A variety of biological functions depend on electrolytes. They acquire a natural positive or negative electrical charge.
What is intracellular or extracellular ions?
Electrolytes are classified as both intracellular fluid and the extracellular fluid include electrolytes chemicals. The main cation and anion in extracellular fluid, respectively, are sodium and chloride.
Sodium is one of the most crucial electrolytes in the extracellular fluid because it is an active cation. It is in charge of regulating the cell's membrane potential, as well as maintaining the extracellular fluid volume.
All body tissues require the mineral potassium, which is a necessary component. Because it carries a little electrical charge that activates numerous cell and nerve activities, it is also referred to as an extracellular anion.
Therefore, electrolytes are classified as intracellular or extracellular.
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Which best describes a plasmid I’ll give brainliest pls
Answer:
Plasmids are used in biotechnology.
Explanation:
A plasmid is a natural or artificially modified circular DNA molecule for use in biological research.
The researchers use the plasmids to insert a DNA fragment of interest, thanks to the cloning cassettes. They can clone genes to express proteins or RNAs and analyze them.
Answer:
A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently. They are most commonly found as small circular, double-stranded DNA molecules in bacteria; however, plasmids are sometimes present in archaea and eukaryotic organisms
Explanation:
Will a paper airplane with longer wings fly farther than shorter wings?
Answer:
yes
Explanation:
because pwede nya liparin hagang 10meters
Answer:
no .the shorter wings fly farther than longer wings
A combination of DNA and protein molecules that exists in a loose, web-like form is known as ________.
chromosomes
histones
centromeres
chromatin
Answer:
The answer is Chromosomes
An increase in the membrane permeability for a solute will result in an increase in the driving force for diffusion of that solute through the membrane. True or false?.
A membrane's permeability has an impact on the diffusion rate. As membrane permeability increases, the diffusion rate rises.
The dispersion of materials is also impacted by changes in temperature and pressure values.The passive diffusion rate of penetrated molecules through the biomembrane can be used to quantify a membrane's permeability. It is well acknowledged that the permeability of any particular molecule depends mostly on its size, polarity, charge number, and molar mass.The capacity for materials to flow into and out of a membrane is known as permeability. The ease with which a chemical can diffuse across a cell membrane determines its permeability.Only chemicals that can dissolve in fat can typically pass through a cell membrane.The electrical potential gradient across the cell membrane and the concentration gradient of the permeant ion across the membrane together make up the net electrochemical driving force.Learn more about permeability here:
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What conditions may occur when a population is in exponential growth
Answer:
some of the organisms may nit have enough food to survive bc theres not enough to go around
Explanation:
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Which is not a function of cholesterol within the cell membrane?
Reduces permeability to some solutes
Reduces membrane fluidity
Prevents crystallisation of the membrane at low temperatures
Transports molecules across the cell membrane
Answer:
c
Explanation:
The function of cholesterol within the cell membrane maybe be many, but does not include the reduction in membrane fluidity .
The steric structure of the cholesterol in the cell membrane is such that:
it prevents freezing of the membrane when the temperature gets lowIt limits the permeability of some materialsit makes the membrane more fluid and stableit helps take up cholesterol from the surrounding environment into the cell, hence, helps with the transport of molecules.The correct answer as to which is not a function of cholesterol within the cell membrane would, therefore, be that it reduces membrane fluidity.
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What type of macromolecule is an enzyme?
carbohydrate
lipid
protein
nucleic acid
One half of a duplicated chromosome is called:
Telomere
Chromatid
Chromatin
Centromere
One half of a duplicated chromosome is called Chromatid. The correct option is B.
Thus, A chromatid is the name for the duplicated half of a chromosome. The chromosome is duplicated during DNA replication, creating two identical copies known as sister chromatids.
The centromere, a particular area, is what holds these sister chromatids together. A complete set of DNA molecules or genetic material can be found in each chromatid. During cell division, the sister chromatids split apart to form individual chromosomes, which are then dispersed to the daughter cells.
Contrarily, the telomeres are specialized structures found at the ends of chromosomes that aid in maintaining the DNA's integrity during replication and guard against deterioration.
Thus, One half of a duplicated chromosome is called Chromatid. The correct option is B.
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sustainability can be excercised in the harvesting of many different natural resources describe how t
Fishing until reaching an established quota that allows the fish population to rebound each season is a method of sustainable fishing
What is sustainability ?The main objective of sustainability is for people to live in peace and harmony on Earth for an extended period of time. Specific definitions of sustainability are difficult to agree on and hence vary in the literature and across time
Sustainability is often represented diagrammatically. The figure at the top of this page suggests that there are three pillars of sustainability – economic viability, environmental protection and social equity.Sustainability is important for many reasons including: Environmental Quality – In order to have healthy communities, we need clean air, natural resources, and a nontoxic environment. Growth - UNTHSC's enrollment continues to expand, thus we demand additional resources such as energy, water, and space.Learn more about Sustainability here:
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Theres an old man needed your help but you are soo late in your work.What would you do?explain it briefly.
Answer:
I will help him first
Explanation:
because it's our duty to help elders .
Why were garden peas a good choice for a study of heredity?
Answer:
pea plants because they were easy to grow, could be bred rapidly, and several observable characteristics, like petal color and pea color.
Explanation:
What would happen if sulfur was removed entirely?
Sulfur is essential for humans, animals and plants. When it enters our body, it can be incorporated into tissues such as skin and cartilage. It is also found in some proteins and vitamins. if the sulfur were completely removed, it causes several symptoms, such as depression, neuritis, unpleasant odor in the saliva and a decrease in the brightness of the skin. To avoid this deficit, it is recommended to eat fruits and vegetables. Foods of animal origin such as milk and eggs also have it in their constitution.
What is the role of sulfur in the human body?Another great advantage of sulfur is that it has anti-inflammatory action, in addition to being an antioxidant. This means that it fights free radicals and also increases the body's defense against invading agents, preventing, for example, the flu. In addition, the mineral helps to detoxify the body.
With this information, we can conclude that Sulfur dioxide is a toxic gas that mainly affects the mucous membranes, acting on the respiratory system and eyes, causing irritation.
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development of continuous flow systems to access secondary amines through previously incompatible biocatalytic cascades
The use of continuous flow reactors enabled previously inaccessible enzyme combinations in multi-enzyme cascade reactions.
The combination of oxidases with aminating biocatalysts (transaminase/reductive aminase) and was extended to the continuous in situ biocatalytic generation of amino donors for the reductive aminase.
The reaction cascades described here started with the generation of aldehydes from stable and commercially available alcohols. As aldehydes are versatile yet unstable intermediates, it was thought a continuous flow system that generated this group in situ at high concentrations could allow for a range of subsequent enzymatic modifications. Biocatalytic oxidations are fundamental in transitioning to a bio-based economy, in particular the use of oxidases which carry out selective oxidation using molecular oxygen as the sole oxidant.
For the first time it has been shown that previously incompatible enzyme cascades can be run continuously, greatly improving the metrics (up to 58-fold for STY and 4-fold for enzyme productivity) when compared to the equivalent batch reactions. This system is extremely versatile with several enzyme combinations tested that enabled the generation of a range of amine intermediates. The reactors were also extended to demonstrate proof-of-concept, high throughput reaction screening in continuous flow. A continuous synthesis of the biologically relevant molecule 4O-methylnorbelladine was also successfully demonstrated. Using a continuous approach allows many additional benefits to those discussed here to further improve biocatalytic reaction efficiency.
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HELP ASAP ILL GIVE BRANLIEST!!!!!
Answer:
What's ur question?
Explanation:
Answer:
You must give us a question so we can answer.
Explanation:
which organelle builds proteins
Answer:
I belive its ribosomes.....
Explanation:
Each lunar cycle has one full moon, in which the relative positions of Earth, the sun, and the moon form in a straight line. Which list represents the position of Earth, the sun, and the moon during a full moon?
Answer:
b
Explanation:
help asap 1st answer gets brainliest
Answer:
it looks like it is B
Explanation:
Hope this helps!! :D