Answer:
If crossing over doesn’t occur, then 2 out of the 4 daughter cells would be identical.
We have 46 chromosomes and are diploid meaning we got 1 set (23 chromosomes) from our mom and 1 set (23 chromosomes) from our dad.
In prophase 1, homologous chromosomes associate (chromosome #1 from dad and chromosome #1 from mom. They both code for the same things, but they are NOT identical)
Let’s compare mitosis to meiosis
On the left, see how in mitosis all chromosomes (even homologous) line up in single file (imagine all 46 lining up individually). When anaphase splits the sister chromatids (which are identical) in mitosis, each daughter cell gets the exact same genetic info.
(they get both homologous chromosomes: 1 from dad (yellow)and 1 from mom (purple) resulting in a full diploid set)
On the right in meiosis, see how the homologous chromosomes associate and will split? Chromosome #1 from mom (purple) is going to the left daughter cell while chromosome #1 from dad (yellow) is going to the right daughter cell. This means the two daughter cells will only have 1 set for chromosome #1 (either moms or dads but NOT both) and become haploid (1 set of 23 chromosomes)
Again in mitosis, all 46 lined up individually, but in meiosis the 23 from mom and 23 from dad first associate and each orient to decide which daughter cell gets the dads chromosome or the moms chromosome. They assort independently meaning just because dads chromosome #1 went to the left DOESN’T mean that dads chromosome #2 or #3 will go to the left. This gives a unique pattern of 23 chromosomes for the 2 daughter cells of meiosis 1 (a various mixture of moms and dads, but it is possible to result in a daughter cell with just moms and just dads set, though this would be a very small probability like 1 in 2^23 )
So each daughter cell of meiosis 1 is a haploid set (only 1 set instead of 2) and the opposite of the other (since 1 has fathers while the other has mothers for the same chromosome)
Meiosis 2 is just like mitosis. Here the sister chromatids separate producing 2 identical daughter cells
(identical if crossing over doesn’t occur. Crossing over only occurs on adjacent homologous chromatids)
If crossing over doesn’t occur then both sister chromatids are identical so that 2 out of 4 daughter cells will be exactly identical haploid sets. The other 2 are identical to each other as well.
Explanation:
Answer:
please give me brainlist and follow
Explanation:
Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell.
sorry .it's half answer
what types of proteins are not synthesized in the rough er?
Answer:
Explanation:
Mitochondrial proteins
A man and woman have a son who is color blind, a recessive sex-linked trait carried on the X chromosome, but neither parent is color blind. The woman is now pregnant with their second child. Which of the following statements is true about the second child?
A daughter will be color blind because the father is a carrier of the recessive allele.
A son will be color blind because the mother is a carrier of the recessive allele.
A daughter will not be color blind because the father is not a carrier of the recessive allele.
A son will be color blind because the father's mother must have been a carrier for recessive allele.
Answer:
B. A son will be colour blind because the mother is a carrier of the recessive allele.
Answer: The answer is B
Explanation: The son will be color blind because the mother is a carrier of the recessive allele.
Hope this was helpful
what is the first link in the pediatric cardiac chain of survival
Answer: The first link in the Pediatric Chain of Survival is the prevention of injuries, accidents, and trauma that could lead to cardiac arrest.
Explanation: found online.
In which example do the cardiovascular and respiratory systems work together?
taking carbon dioxide from cells and removing it from the body
thinking about a song and then singing it to a large crowd of people
breaking down food and bringing it to different cells in the body
drinking a lot of water and then removing extra water from the body
○A)taking carbon dioxide from cells and removing it from the body
Hope this helped you- have a good day bro cya)
Some bacteria are aerobic and others are anaerobic. What does this mean?
A.
Some use H2O (water), and others do not.
B.
Some use CO2 (carbon dioxide), and others do not.
C.
Some use air, and others do not.
D.
Some use O2 (oxygen), and others do not.
Answer:
D. Some use O2 (oxygen), and others do not.
Explanation:
Bacteria can either grow aerobically or anaerobically. Because of their ability to respire and ferment organic substances, these types of bacteria (facultative anaerobes), can continue growing in the presence or the absence of oxygen.
Hope this helps! Please Mark BRAINLIEST.
Answer:
They would perform aerobic processes.
Explanation:
When exposed to a lack of oxygen, facultative anaerobes develop metabolic processes with oxygen, like respiration. But in the absence of oxygen, they can develop processes like fermentation. When in oxygen, they prefer the use of it, because that's what makes them facultative, the fact that they're able to work in both circumstances. Otherwise, tolerants are able to survive but not to work properly, in different environments.
pls give brain.. PLS
how do I write the equation P^2 = kA^3, so that I'm solving for the variable K?
Answer:
k = (P^2)/(A^3)
Explanation:
Step 1: Flip the equation.
[tex]kA^3 = P^2[/tex]Step 2: Divide both sides by A^3.
[tex]\frac{kA^3}{A^3} = \frac{P^2}{A^3}[/tex] [tex]k = \frac{P^2}{A^3}[/tex]Therefore, the answer is [tex]k = \frac{P^2}{A^3}[/tex].
A ____________ is neither a plant, animal or bacteria but causes trouble to all living things.
Answer:
I say that fungi makes more sense, so a fungi is neither a plant, animal or bacteria but causes trouble to all living things.
Explanation:
Since fungi don't classify as plants and are more complex than bacteria's, as they obviously aren't animals.
20 points help A number of similar families make up a(n) _____.
A order
B class
C genus
D specie
Answer:
Genus Species
Explanation:
in which reactions of cellular respiration does substrate-level phosphorylation occur?
Answer:
During the Kreb’s cycle, also known as the citric acid cycle.
Explanation:
In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. How is the term used in everyday life?
Answer:
It explains facts and allows people to make predictions.
Explanation:
In everyday life, the word theory often means an untested hunch, or a guess without supporting evidence. A theory not only explains known facts but also allows scientists to make predictions of what they should observe if a theory is true.
In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. The term is also used in everyday life based on personal beliefs which does not support any strong evidence.
What is scientific theory?In science, a theory is a term applied to a well-explanation of an aspect of the natural world on the basis of empirical evidence that has undergone rigorous testing and evaluation. The process involves collecting and analyzing data and observations and hypotheses are based on the data obtained which form the basis of scientific theory. Therefore, scientific theory is an explanation that has been verified by scientific researchers.
However, the term theory is casually used in everyday language without any scientific proof. For example, someone may say "I have a theory that the universe fake". This fact is casually spoken by a person which is not based on any scientific fact.
Scientific theories are based on evidence supported by rigorous testing, while everyday theories are based on personal beliefs without any strong evidence.
Therefore, the term theory is also used in everyday life, which is based only on a personal belief, and not only on any scientific fact.
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which structures of the cytoskeleton are found in animal cells
Answer:
Microfilaments, microtubules and intermediate filaments make up the cytoskeleton of animal cells. They are all made up of smaller protein units and can serve a variety of functions for the cell. From transportation to cell movement to support and structure, the cytoskeleton is an invaluable part of the animal cell.
Explanation:
How can humans influence the nitrogen cycle?
A. By taking really long showers
B. By using too many fertilizers
C. By driving cars that release lots of carbon dioxide
Explanation:
I think the answer is B hopefully it's right
a)what would happen to the quantity of sweat when temperature increases? explain why it happen.
b)what would happen to the quantity when temperature increases? explain why it happen.
c)relate the relationship between both reason in answer (a) and (b)
i'm sorry i didn't understand b and c but i can help you with a)
Explanation:
The human body has the ability to thermoregulate, so when the temperature rises, the blood vessels dilate, and the body emits more heat than it receives, and therefore sweat is released to cool the body. Hence, the higher the temperature the greater the sweating
hope it helps ;)
2. A compound is (circle the BEST answer)
a. One type of element
b. More than one type of element
c. More than one type of element chemically bonded.
what is the largest source of anthropogenic greenhouse gas emissions globally?
Answer:
Deforestation and other changes in land use also emit carbon dioxide and methane. The largest source of anthropogenic methane emissions is agriculture, closely followed by gas venting and fugitive emissions from the fossil-fuel industry.
Explanation:
Answer:
its a
Explanation:
need an answer quick!!
bio
will give brainliest to correct answerer
Answer:
yy
Explanation:
If the yellow flower genotype is the dominant trait ( Y ), then the white flower has to not contain 'Y'
Hopefully this helps!
Brainliest please?
penicillin is harmful for other fungies and fungal diseases?
Answer:
The antibacterial effect of penicillin was discovered by Alexander Fleming in 1929. He noted that a fungal colony had grown as a contaminant on an agar plate streaked with the bacterium Staphylococcus aureus, and that the bacterial colonies around the fungus were transparent, because their cells were lysing.
Explanation:
after water, which are the next most abundant substances in the human body?
Answer:
Proteins
Explanation:
After water, Proteins are the next most abundant substances in the human body.
In adult men , 60% of body is comprised of water whereas in women , 55% of body is comprised of water.
Protein makes up around 20% in body and is present in every cell.
What are Proteins?Proteins are large complex molecules and play critical roles in the body. They do most of the work in their cells and required for structure functions and regulation of body tissues.
Proteins are made up of smaller units called amino acids, which are attached to one another in long chains.
There are 20 different types of amino acids that can be combined to make a protein.
The sequence of amino acids determines about each protein’s unique 3-dimensional structure and its specific function.
Amino acids are coded by combinations of three DNA building blocks (nucleotides), determined by the sequence of genes.
Functions of Proteins:
1. As an Antibody- Bind to specific foreign particles such as bacteria and virus to help protect the body.
2. As an Enzyme- Carry out thousands of chemical reactions taking place inside the cell
3. As a Messenger- Transmit signals to coordinate biological processes between different cells, tissues and organs.
4. As a Structural Component- Providing structure and support to cells.
5. Transport/Storage- Binding and carrying atoms and small molecules within cells and throughout the body.
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explain how the body establishes a pressure gradient for fluid flow.
Answer: refer to, uofmhealth.org/health-library/tx4097abc
Explanation:
you should find your answer there
!!!
is my answer correct??
pls see!!
Answer:
thats correct, good job!
Explanation:
can i have brainliest pls im trying to get to virtuoso
Why might (mostly) boneless creatures, like jellyfish, sea slugs, squid, and octopuses, fare especially well underwater? What is it about the physics of being underwater that would allow relatively large, sometimes highly mobile creatures to flourish that isn’t true for boneless land creatures?
Answer:
hmm well id say because it helps them move better underwater than on land because they swim diffrently than humans
Explanation:
Is the following sentence true or false? As a cell gets larger, it takes longer
for a molecule that has entered the cell to reach the middle of the cell.
Answer:
true
Explanation:
hope it helpsssssss
Answer:
true
Explanation:
because if larger the molecules will travel much longer to get to the center
why is the observation that one hormone may bind to more than one type of receptor important?
The word matrix can be used to describe things shaped In a pattern of lines and spaces. How does this relate to a mitochondrion?
The definition of the word matrix can be applied to the organelle known as mitochondria given that the mitochondria have what is known as a "mitochondrial matrix".
The mitochondria are amongst the most important organelle of a cell. They are responsible for the production of energy molecules in the form of ATP. The basic structure of mitochondria consist of:
Outer membraneIntermembrane spaceInner membrane MatrixGranulesand contain even more elements within.
The inner membrane of the mitochondria surrounds the matrix, giving it the form of a pattern of lines that bend and curve, leaving spaces in between. The similarity between this shape and the definition that is given of the word "matrix", explains why this structure may have been given the name of the mitochondrial matrix.
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Where does protein synthesis begin?
Answer:
Protein synthesis occurs in the cytoplasm on ribonucleoprotein particles, the ribosomes.
Explanation:
hope it helps
Plant cells don't have mitochondria in their cytoplasm because of the presence of chloroplasts that convert light energy into chemical energy.
True
False
Answer:
true brainliest pls
Explanation:
Qué relación tiene cultivar y la diversidad por favor
Answer:
La diversidad se refiere a aquellos aspectos que son diferentes entre las personas, ya sea el género, la edad, el sexo, la ubicación o incluso el idioma.
Explanation:
Se trata de diferentes ideas, opiniones y puntos de vista. Cuando incorporas la diversidad en el lugar de trabajo, estás creando una mezcla poderosa.
which type of muscle tissue is the only one that can respond to voluntary nervous stimulation in most people?
The type of muscle tissue that can respond to voluntary nervous stimulation is skeletal muscle. This type of muscle is the most common of the three types of muscle (skeletal, cardiac, and smooth muscle) in the body.
Skeletal muscles are a voluntary type of muscle attached to bones of the skeleton by tendons.
These muscles (skeletal muscles) are voluntary because they are activated in response to information received from the somatic nervous system.
Skeletal muscles comprise approximately 30-40% of the total body mass.
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Why do Mitochondria and Chloroplasts have their own DNA?
Answer: To allow regulation of trans-membrane electron transport at the cell's energy barrier, genes in mitochondria and chloroplasts are co-located with their gene products.
Explanation:
an element can be identified by its unique number of –
Answer:
Protons
Explanation:
Every element has a unique number of protons and thats what the atomic number is on an element and how they're labeled in a periodic table