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
aksik [14]
3 years ago
7

What is crossing over and why is it important?

Biology
1 answer:
DiKsa [7]3 years ago
7 0
<span>Crossing over or Chromosomal crossover is the process that occurs in cells between the stages of phrophase  I and metaphase I in meiosis. It is important because it is responsible in the exchange of genetic material between homologous chromosomes during sexual reproduction. This process ensures the normal segregation of chromosomes during meiosis, and genetic variation. Homologous chromosomes pair up with each other and exchanges segments of their genetic material to form new chromosomes. Thomas Hunt Morgan described crossing over in his theory of genetics. </span>
You might be interested in
Describe the role of matter in living and nonliving things
just olya [345]
Matter is anything that takes up space. Your mass determines how big, or small you are. Or, how big or small something is. Matter is in everything. Even air has matter. Humans are made of matter. Matter makes up atoms, carbon, cells, and everything else you can think of. (Except ideas)
7 0
3 years ago
20 Points!!<br> Describe how an ionic compound is formed.
a_sh-v [17]

A metal and non-metal form into a compound. that compound is an ionic compound.

4 0
3 years ago
• An ecosystem only has a certain amount of
labwork [276]

Answer:

An ecosystem only has a certain amount of resources to support a certain number of organisms.

Explanation:

An ecosystem consist of resources and organisms. Resources are the material which are responsible for the survival of living organisms in that ecosystem. Examples of resources are light, water, oxygen and food substance. In the absence of these resources, organisms will die.

7 0
4 years ago
During stressful situations the ___ nervous system is activated.
antiseptic1488 [7]
During stressful situations the sympathetic nervous system is activated <span />
8 0
3 years ago
Bipedal walking is more energy efficient
Vinvika [58]

Answer:

C. When running that is the answer

6 0
3 years ago
Read 2 more answers
Other questions:
  • _______ are made from chains of amino acids. They are the building blocks of tissues, such as skin and muscles. A. Metals B. Car
    15·1 answer
  • I need help on a science question
    6·1 answer
  • The lungs are perfused by two circulations: the pulmonary and the bronchial. The pulmonary circulation is for oxygenation of blo
    7·1 answer
  • Why is it important to<br> maintain exact chromosome number during asexual<br> reproduction.
    9·1 answer
  • Different cells and cells from different species use very different chemicals for signaling
    9·1 answer
  • Help please
    15·1 answer
  • What composes the backbone, or side pieces, of the DNA molecule?
    14·1 answer
  • Heres the video i dont know what it means
    12·1 answer
  • BIOLOGY QUESTIONS!!!! BRAINLIEST to ANYONE WHO ANSWERS ALL FOUR&gt;.
    6·1 answer
  • What is Photosynthesis.....?!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!