1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergij07 [2.7K]
2 years ago
13

Use the mechanisms of meiosis to explain why most mules are sterile.

Biology
1 answer:
Tema [17]2 years ago
4 0

Answer:

3. An even number of chromosomes are required for synapsis during prophase I and proper pairing during metaphase

Explanation:

Mules are hybrids of a cross between a female horse and a male donkey. Horses contain 64 chromosomes while donkeys contain 63 chromosomes in their somatic cells respectively. This means that they each produce 32 and 31 chromosomes respectively during meiosis. A mule, hence, contains 32+31= 63 chromosomes in their somatic cells.

This chromosome number in mules are uneven for meiosis to occur because meiotic division requires that an even number of homologous chromosomes pair together in a process called SYNAPSIS during prophase I of meiosis I. This is impossible in a mule because of the uneven number of chromosomes in its cells.

Also, during metaphase of meiosis, the homologous chromosomes need to be properly aligned at the equator for separation to occur. This is also impossible in a mule considering the number of chromosomes that don't add up.

Due to this reason of unevenness in the number of chromosomes present in a mule, meiosis will not occur and if meiosis (gamete formation) does not occur, reproduction cannot take place. Therefore, the mule is a sterile species i.e. cannot produce offsprings via sexual reproduction.

You might be interested in
What is tetracycline?~<br><br>ty​
ZanzabumX [31]

Answer:

Tetracycline is used to treat infections caused by bacteria including pneumonia and other respiratory tract infections; ; certain infections of skin, eye, lymphatic, intestinal, genital and urinary systems; and certain other infections that are spread by ticks, lice, mites, and infected animals.

Tetracyclines (tetracycline, doxycycline, minocycline, tigecycline) are a class of medication used to manage and treat various bacterial infections. Tetracyclines classify as protein synthesis inhibitor antibiotics and are considered to be broad-spectrum.

6 0
2 years ago
Read 2 more answers
How can a diet that is 90% carbohydrates support the same amount of protein in the human body as a diet that is only 15% carbohy
jeyben [28]

Answer:

Due to increase or decrease in the concentration of carbohydrates have no effect on protein concentration.

Explanation:

A diet having 90% carbohydrates support the same amount of protein in the human body as a diet that is only 15% carbohydrates because with the increase or decrease of carbohydrates in the diet does not increase the amount of protein. Protein and carbohydrates are two different things, proteins broken down into amino acid that is utilize by the body for making muscles while carbohydrates are broken down into glucose that is used by the body for performing daily activities.

7 0
2 years ago
when you get a cold, what do you think your body will make more of? white blood cells saliva hormones red blood cells
monitta
Red blood cells i think
7 0
3 years ago
During an infection with listeria, an intracellular bacterium, antigen presenting cells will present antigen on mhc class ______
Marat540 [252]

During infection with Listeria, an intracellular bacterium, APCs will present antigen on MHC II molecules and triggers a phagocytic property by stimulating the release of macrophages.

What is the role of macrophages in Phagosomes?

Phagosome maturation was formerly regarded to be a very simple notion that described how much phagosomes had united with lysosomes.

  • Unfortunately, this assumption is no longer valid because phagosomes are now known to interact with a variety of intracellular organelles during their maturation process.
  • Proteins, such as the NADPH oxidase complex that creates the superoxide burst, may be seen being assembled on the phagocytic cup even before they are fully formed.
  • When the phagosome closes and the maturation process begins, it becomes increasingly acidic and hydrolytically active, and it transiently fuses with the recycling endosomal system, the secretory system, including secretory lysosomes, multi-vesicular bodies such as the MHC class II (MIIC) compartment, and even the endoplasmic reticulum.

Learn more about phagosome here, brainly.com/question/15607257

# SPJ4

3 0
1 year ago
Read 2 more answers
What is unusual about organisms in the domain Archaea?
nlexa [21]
Answer : A : They live in extreme environmental conditions.
4 0
3 years ago
Other questions:
  • Which particle has the most energy ice water steam or no difference
    10·2 answers
  • During photosynthesis, plant cells take in water (H2O) and carbon dioxide (CO2) and release oxygen (O2). How is this different f
    6·1 answer
  • PLEASE HELP ME AS SOON YOU CAN<br><br> Brainliest to best answer!!!
    15·2 answers
  • Help! Carbon dioxide and temperature. The CO2 value in 48000 BC was 278ppm and the value in 400 BC was 285ppm. the temperature a
    5·1 answer
  • In which form to plant store energy
    6·2 answers
  • WHAT SHOULD U DO AFTER MAKING A HYPOTHESIS
    10·2 answers
  • A tropical rainforest includes trees, animals, insects, plants, rain, rivers, rocks, soil, and warm, moist air. Which spheres of
    11·1 answer
  • Protozoans are the only organisms that can convert nitrogen from the air into chemical compounds that plants can use.
    9·1 answer
  • Hydrogen peroxide is a harmful by-product of normal metabolic activity. In order to prevent damage, hydrogen peroxide must be br
    14·1 answer
  • Are all human cells capable of mitosis and cell division? How does this affect the body's ability to repair itself? Support your
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!