Meiosis is the common factor which is responsible for the production of new combinations or recombination in the organisms which reproduce through sexual mode of reproduction.
What is Meiosis?Meiosis is a special type of cell division which occurs in the germ cells in organisms which reproduce through sexual mode of reproduction. These organisms produce the gametes, such as sperms or egg cells. Meiosis involves two rounds of division which ultimately result into formation of four daughter cells with only one copy of each chromosome.
Recombination or new combination results when two molecules of DNA exchange pieces of their genetic material with each other. One of the most common examples of recombination can be observed during meiosis specifically, during the prophase I stage, when homologous chromosomes line up in pairs and swap some segments of their DNA.
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Three unlinked genetic loci, each with two alleles, determine the differences in sugar content (and therefore sweetness) in a diploid fruit. These genes contribute equally to sugar content, and their effects are additive. The least sweet variety (aabbcc) and the sweetest (AABBCC) are bred to produce an F1 generation. All the F1 plants produce fruits of intermediate sugar content. Phenotypes are listed below:
Plants Sugar content value, relative to sweetest plant
aabbcc 40%
AABBCC 100%
F1 70%
The fruit breeder's goal is to sample a variety of sugar contents. She breeds F1 plants with one another to produce F2 progeny. For each sugar content listed below, what is the probability that an F2 plant will produce fruit with that sugar content?
a. 70%.
b. 50%.
C. 80%.
d. 100%.
Answer:
This is actually a case of additive effect that means, it doesn't matter which allele is dominant which is recessive. Here what really matter is the total number of dominant and recessive alleles.
Offspring with_
All 6 dominant allele possess 100% sugar content.
any 5 dominant alleles possess 90% sugar content.
Any 4 dominant alleles possess 80% sugar content.
Any 3 dominant alleles possess 70% sugar content.
Any 2 dominant alleles possess 60% sugar content.
Any 1 dominant allele possess 50% sugar content.
Zero dominant allele (aabbcc) possess 40% sugar content.
Hence by this concept we can easily find the percentage of sugar content of any offspring.
what is the probability that an F2 plant will produce fruit with that sugar content?
a. 70% - 17/64. (all Blue coloured offsprings)
b. 50% - 5/64. (all green cloured offsprings)
c. 80% - 15/64. (all red coloured offsprings)
d. 100% - 1/64 (single purple colored AABBCC offspring).
Parents AABBCC X aabbcc
(100%) x (40%)
F1 AaBbCc
(70%)
F1 selfing AaBbCc x AaBbCc
Possible gametes of AaBbCc are ABC, ABc, AbC, Abc, aBC, aBc, abC, and abc.
Cross shown to draw a Punnett Sqaure-
21. Which is NOT a mechanical wave?
A. the light from a flashlight
B. the sound heard from the cavity of a shell
C, the echo produced when you shout in a hall
D. the wave produced in a porcelain plate struck with a metal spoon
At 40°C, the temperature of sorghum could be lower than 40°C. True or False
Answer:
True.
Explanation:
The temperature of sorghum could be lower than 40°C when the surrounding temperature is 40°C because the sorghum plant absorb the sunlight and used it in the process of photosynthesis and the transpiration process regulate the body temperature of sorghum plant. Transpiration is the process in which water evaporated through a plant and its aerial parts, such as leaves, stems and flowers. This process removes extra heat with water through stomata so we can say that the temperature of sorghum is lower than 40°C.
During which process of glass manufacturing does the glass flatten out?
Melting the Wax
Washing, drying, and cutting
Annealing
Floating on tin
Answer:
Floating on tin
What two forms of matter do plants absorb from soil in order to grow?
Answer:
liquid (water)
geses like hydrogen,oxygen etc.,
Answer: Nutrients and Water
Explanation: Plants actually need Nutrients as well as water which consists of hydrogen and oxygen from the soil to grow. Plants also need sunlight and carbon dioxide to grow. They get carbon dioxide from the air as carbon helps plant to build new stem, leaves, stems, and roots. And the oxygen they get from the carbon dioxide is used to build glucose molecules.
Nutrients provide plants with the strength which helps them to grow big strong and healthy.
Water helps to move the food and nutrients to all over the different parts of the plant.
Part B
The minerals that make up rocks give them their unique properties. Based on your results, do you think that any of your three rocks have the exact same mineral make up, or are they three different types of rock? Explain your answer.
Rocks doesn't have the exact same mineral make up as they are made of different composition.
How to illustrate the information?A naturally occurring collection of minerals and/or mineraloids is called rock. There is no known chemical makeup of rocks.
Minerals are naturally occurring substances with unique atomic structures, compositions, and chemical and physical properties. Typically, two or more minerals are mixed together through geological processes to form rocks.
Because of their minerals, formation processes, and processes that have affected the rocks since they were formed, various rocks have different properties.
Rocks are composed of minerals and have a wide range of traits or properties. When a rock is ground into a powder, it takes on the color of streak, and a rock's luster indicates how shiny it is. Other characteristics include size, shape, texture, and hardness.
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Many years ago, scientists
considered sponges to belong to Kingdom Plantae. What sort of evidence convinced them that sponges belonged to Kingdom Animalia?
HELP LIMITED TIME!!!!!!!!!!!!!!!
Changing the Earth's climate results in:
Select one:
1, Rising sea levels
2, Irregular weather patterns
3, All of these
4, Melting ice caps
Answer:
All of these
Explanation:
Changing the Earth's climate can have a number of impacts on the planet and its inhabitants. One potential effect is rising sea levels, as a warmer climate can cause the polar ice caps to melt, increasing the amount of water in the oceans. This can lead to flooding and other coastal hazards. Another effect of climate change is irregular weather patterns, as a changing climate can alter the frequency and intensity of storms, droughts, and other extreme weather events. This can have significant impacts on agriculture, natural systems, and human communities. Finally, changing the Earth's climate can also result in melting ice caps, as rising temperatures can cause the polar ice caps to melt and contribute to rising sea levels. Overall, climate change can have a range of impacts on the Earth and its inhabitants, and understanding these impacts is an important part of addressing this global challenge.
examples for classification
Answer: Here are a few examples of classification:
Explanation:
Organizing a library's books by genre (e.g. fiction, non-fiction, children's books, etc.)
Sorting clothing items by size (e.g. small, medium, large)
Grouping types of food based on their ingredients or cooking methods (e.g. vegetarian, vegan, gluten-free)
I’m having trouble with the question can someone help
Answer:
ans: B
Explanation:
a grp of cell is tissue
a grp of tissue is organ
a grp of organs are organ system
a grp of oragan system is organism
What process (mitosis or meiosis) do pollen and egg cells undergo?
A new phenotype of mouse has been discovered – short-tails. You have been given a short-tailed mouse and do not know anything about its genotype. You decide to cross this short-tailed mouse with a long-tailed mouse. Multiple crosses of this short-tailed mouse to long-tailed mice produces 27 long-tailed mice and 25 short-tailed mice. When you cross these short-tailed progeny with each other, you get 31 short-tailed mice and 11 long-tailed mice.
Required:
a. What was the genotype of the original short-tailed mouse?
b. What is the genotype of the long-tailed mice used in this breeding experiment?
Answer:
a. Ss
b. ss
Explanation:
This question involves a gene coding for tail length in mice. According to the question, a new phenotype of mouse has been discovered to have short-tails. This short-tailed mouse was crossed with a long-tailed mouse multiple times to produce 27 long-tailed mice and 25 short-tailed mice. Based on this phenotypic result, the phenotypic ratio can be deduced to be:
Long tail = 27/25 = 1.08
Short tail = 25/25 = 1
Long tail : short tail = 1:1
This phenotypic result can only be achieved if
The short tailed mice got in the F1 generation was self-crossed to get 31 short-tailed mice and 11 long-tailed mice. Based on this result as well, the phenotypic ratio can be deduced to be:
Short tailed = 31/11 = 2.8
Long tailed = 11/11 = 1
Approximately, the phenotypic result of F2 is short tail 3 : long tail 1.
Based on the above phenotypic ratios, the F1 generation with {Long tail : short tail = 1:1} can only be got from heterozygous (Ss) and homzygous recessive (ss) mice. Also, based on the F2 generation with {short tail 3 : long tail 1}, the result can only be got when the parents mice are both heterozygous i.e. Ss × Ss.
This concludes that the short tail length is dominant over the long tail length. Hence, the original short tailed mouse has a heterozygous genotype of Ss while the long tailed mouse used in the experiment has a genotype; ss.
Is acid rain a short-term or long-term environmental impact?
Answer:
long term effect
Explanation:
while the long term effect of acid rain are still being studied , it is well documented that the effects include harm to freshwater ecosystems and widespread decline in Forest health including damage to more than 70 percent of the red spruce forests in parts of New England
The mechanical advantage of a machine is the number of times it a. multiplies the resistance force. b. multiplies the effort force. c. changes the direction of the effort force. d. changes the direction of the resistance force.
The force or speed of a machine is multiplied by its mechanical advantage. It is a figure (without units) that indicates how many times the apparatus multiplies a force (or speed). I. M. A. An ideal machine's mechanical advantage is the optimal mechanical advantage. Thus option A is correct.
What is the mechanical advantage of a machine?The ratio of load to effort is referred to as a machine's mechanical advantage. The efficiency of a machine is due to its mechanical advantage. Effort/Load = Mechanical Advantage. The mechanical advantage M A is equal to F 0 F I where F 0 is the output force and F I is the input force.
Therefore, multiplies the resistance force.
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Therapeutic cloning in which embryonic stem cells are used raises concerns among some members of society. Which of these is usually the greatest concern?
Cells is the usually the greatest concern.
What is Cell?A cell is a collection of cytoplasm that is held together on the outside by a cell membrane. Cells are the smallest structural units of living matter and make up all living things.
They are typically tiny in size. Numerous organelles, including one or more nuclei, are present in most cells and perform a range of functions. Like a bacterium or yeast, some single cells are entire organisms. Others serve as specialized components of multicellular creatures like plants and animals.
In biology, a cell is a basic membrane-bound entity that houses the building blocks of life and is the basic building block of all other living entities. As in the case of bacteria or yeast, a single cell is frequently an entire organism unto itself.
Therefore, Cells is the usually the greatest concern.
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Which bone markings are responsible for making the protrusions of
the ankles, just above the feet?
Answer:
Lateral Malleolus and medial malleolus. The lateral malleolus is comprised of the talus and fibula. The medial malleolus is comprised of the talus and tibia.
Explanation:
hello:)
The fibula, tibia, and talus, the three bones that make up the ankle joint, can all break if you fall or get a hit to the area.
What are the functions of bone of ankles?The subtalar joint, which is located below the ankle joint, permits the foot to move from side to side.
The true ankle and subtalar joints are surrounded by a network of ligaments, which are strong, flexible tissues that connect the bones of the leg to those of the foot.
The responsibility for ensuring the body's balance and stability falls on the ankles. Ankles are positioned to absorb friction brought on by various bodily movements.
Therefore, The talus and fibula make up the lateral malleolus. The talus and tibia are part of the medial malleolus.
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The structure that surrounds an animal cell is the cell wall.
True
False
what are tassels of corn carb?
Answer:
The tassel is a male flower. Remember that the corn plant contains both male flowers and female flowers (corn silks) on the same plant. The tassel consists of many smaller parts that work together to release pollen. The tassel itself consists of a center spike with varying amounts of branches.
Explanation:
The corn-cobs have long tassels because they are involved in the production of a large number of pollen grains. The tassels in corn-cob helps to wave the wind, to trap pollen grains.
Answer:
Male flower
Explanation:
The ear shoots represents the female flowers.
The highest level of organization is an ecosystem.
True
False
Define bilateral symmetry and some special divisions that this type of body plan lends itself to. Give five examples of animals that are bilaterally symmetrical.
Answer:
Bilateral symmetry is a type of body plan in which the left and right sides of the body are mirror images of each other. This type of body plan lends itself to special divisions such as head, thorax, and abdomen. Examples of animals that are bilaterally symmetrical include humans, fish, frogs, butterflies, and worms.
Explanation:
Answer:
Explanation:
d
What example would you use where leaf colour is used to identify different plants?
Answer:
An example of a plant whose leaf colour is used to identify it is the Silver Maple (Acer saccharinum). It is easily recognizable by its silvery-green leaves that have a whitish underside.
Explanation:
What is used to link small parts together so animals can move easily from one to another
Mindy notices that her cat is having trouble urinating. The veterinarian suspects Mindy's cat has a urinary tract infection. Which body system does
this disease affect?
O A.
endocrine
OB. excretory
OC. respiratory
O D. circulatory
Answer:
The answer is B.excretory
What would happen in an ecosystem without primary consumers
Select the correct answer.
Which of these is an example of elemental carbon?
A. Diamond
B. Methane
C. Proteins
Answer: A Diamond
Explanation:
Because of it's crystalline like structure which is given by the traits exhibited by Diamond
9 ¿Cuál es la similitud entre una marea muerta y una marea de primavera?
Answer (in English):
Both Spring and Neap tides occur twice each month. Spring tides occur twice each lunar month all year not regarding what season it is. Neap tides, which also occur twice a month, occur when the sun and moon are at right angles of each other.
En Espanol:
Tanto las mareas vivas como las mareas muertas ocurren dos veces al mes. Las mareas de primavera ocurren dos veces cada mes lunar durante todo el año sin importar en qué estación se encuentre. Las mareas muertas, que también ocurren dos veces al mes, ocurren cuando el sol y la luna están en ángulos rectos entre sí.
Order the steps of carbohydrate digestion:___________
a. Fiber continues to the large intestine, where some is metabolized by bacteria in the colon and the majority eliminated in your stool
b. Saliva contains amylase enzyme, which starts breaking down amylose and amylopectin into smaller starch units and maltose
c. Maltose and other disaccharides are broken down to monosaccharides and absorbed into blood
d. In small intestine, pancreatic amylase breaks down remaining starch into maltose
Answer:
B
D
C
A
Explanation:
Digestion begins in the mouth with the process of chewing also known as mastication. Saliva in the mouth mixes with the food. saliva contains amylose. This breaks down sugar into smaller units of dextrins and maltose.
In the small intestine, the pancreas releases pancreatic juice which breaks down dextrins into smaller units.
the cells in the small intestine helps to transport the digested nutrients to the blood stream
Undigested food goes to the large intestine and eliminated in the stool
acetty II
Science: 01/13: LS Recording
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in wonder what did auggie hav X
S Student Email Students
Microsoft Office Home
uview.instructure.com/courses/5060/quizzes/119344
Venus is called Earth's sister planet because it is almost the
same mass and diameter as Earth.
Use the solar system diagram and the data table to
compare the gravitational attraction of the Sun on these
two planets.
This will be your CLAIM.
OUR SOLAR SYSTEM
ASTEROIDS
SGIOB013
MOON EARTH
URANUS
SATURN
PLUTO
JUPITER
COMETS
Our Solar System
Inner Planets
Distance from
Planet
the Sun (in
million miles)
Mercury 36
Diameter (in
miles)
Temperature Number of
(kelvin) Moon
3,031
100-700K
0
Venus
67.2
7.521
726K
0
Earth
93
7.926
1
260-310K
Mars
141.6
4,222
150-310K
2
Answer:
sorrrrrrrrry I neeeed points
yvcychvk gfubyjvgu nugcyg cykgcrffifrtv h
Explanation:
I can speak French, German, Spanish, English, and Arabic.. I love learning languages and travelling by my van and see the world
why the birds fly on v-formation
Answer:
There are two reasons birds might fly in a V formation: It may make flight easier, or they're simply following the leader.
What might happen if
too much water moved into a cell?
Answer: Cytolysis
Explanation:
Cytolysis is the act of a cell exploding due to that has caused excess water to diffuse into the cell.