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
aev [14]
4 years ago
8

Explain how independent assortment, crossing over, and random fertilization contribute to genetic variation in sexually reproduc

ing organisms.
Biology
1 answer:
nikdorinn [45]4 years ago
5 0

Answer:

Crossing over occurs at prophase 1 of first meiotic division; at a point called CHIASMA, when they form a BIVALENT. During this  period genes are switched between non sister chromatids of homologous chromosomes; which  allow the mix up of individual parent's genetic materials leading to formation of recombinant  chromosomes.

Independent assortment of genes  takes place at meta phase 1 of meiosis.it is the lining up of homologous chromosomes randomly, from the  individual parent different  chromosomes . Basically; there are 2n different forms of lining up of homologous chromosomes at this stage.

Random fertilization increases chances of  genetic variation. Million of sperm cells with varied genetic components, fused with the ovum. the random fertilization ensure that unpredictable characteristics of the two parents are combined leading to formation of hybrid.

Explanation:

You might be interested in
A right handed player who is attempting a forehand stroke should have his or her feet and chest pointed toward the ____ wall.
icang [17]
I believe it should be toward the right side of the wall.
<span>By his or her feet and chest pointed toward the, the player could generate enough momentum to return the ball that come from the point side with a significant power. If the player is left-handed,  the feet and chest should be pointed to the left side of the wall for the forehand stroke.
</span>
6 0
4 years ago
Which type of mutation causes this translation of error that leads to cystic fibrosis?​
MatroZZZ [7]

Answer:

CF is caused by a mutation in the gene cystic fibrosis transmembrane conductance regulator (CFTR). The most common mutation, ΔF508, is a deletion (Δ signifying deletion) of three nucleotides that results in a loss of the amino acid phenylalanine (F) at the 508th position on the protein.

6 0
3 years ago
Which of the following statements is false?
Mashcka [7]

Answer:

Today, most scientists believe instinct is more important than environment in animal behavior is false, so that's the answer. Enjoy.

6 0
3 years ago
Read 2 more answers
A cell needs to produce a large amount of protein. Which organelle would it be most likely to have many of?
Andrews [41]

Answer:

Eukaryotic cells

Explanation:

3 0
3 years ago
What is meant by osmosis?
Mrac [35]

Answer:

a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.

Explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • What would the hypothesis be for "what effect does food color have on the amount of food fish eat?"
    11·1 answer
  • Human activity has greatly increased the amount of carbon dioxide in the atmosphere. The graph below shows one consequence of th
    5·1 answer
  • Can the scientific method be used to prove unique historical events?<br> o Yes<br> NO
    6·2 answers
  • What is the second step of cellular respiration
    13·2 answers
  • Interaction: lungs supply oxygen carried by blood to cells of the body
    5·1 answer
  • Calculate the percentage change in mass for the potato in 0.2 mol/dm3 sugar solution
    13·1 answer
  • Which of the following best describes the "social sciences"?
    10·2 answers
  • What are the characteristic of a cell?
    14·1 answer
  • The term demographic transition refers to ________.
    9·1 answer
  • 7th grade work PLEASE help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!