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
mariarad [96]
2 years ago
7

Crossing over is a very important event in prophase 1 of meiosis! What happens during crossing over and what is the significance

?
Biology
1 answer:
erica [24]2 years ago
4 0

The term ‘Crossing over’ was used by Morgan and Cattell. It is a process in which there is exchange of chromosome segments between non-sister chromatids of a homologous chromosomes. It occurs during pachytene stage of prophase I of meiosis cell division.

Significance of crossing over:

  • Crossing over provides genetic variation in all sexually reproducing organisms.
  • It creates new combination of genes or genetic recombination and produces hybrids.    

You might be interested in
Marci eats 240 gm of carbohydrate, 220 gm from fat, and 132 gm from protein each day. what is marci's daily caloric intake?
luda_lava [24]

The answer is 3468 kcals. Protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

Carbohydrate = 240 gms x 4 = 960 cal Protein = 132 x 4 = 528 cal Fat = 220 x 9 = 1980 cal

Total : 960+528+1980 = 3468 calories

7 0
3 years ago
Read 2 more answers
Why do municipal water treatment plants not use distillation?
k0ka [10]
It takes to much energy and there's a lot of dirt
4 0
3 years ago
Read 2 more answers
4. Scientists have most accurately determined the absolute ages of rock layers by
Vladimir [108]

Answer:

B

Explanation:

7 0
2 years ago
"how did the elodea cells change when aquarium water was replaced with hypertonic solution? what caused those changes?"
iogann1982 [59]
Elodea cells change when aquarium water was supplanted with a hypertonic arrangement is the point at which the cell layer isolated from the cell divider and moved towards the center of the cell. The cytoplasm and chloroplas±s moved towards the center of the cell. The cell shrank and progressed toward becoming plasmolyzed.
5 0
3 years ago
What environmental factor was important for the<br> Cambrian "explosion of life”?
Lesechka [4]

Answer: the earth was just starting to develop really well and well enough for life.

Explanation: atmospheric oxygen and oceanic calcium levels went up, but nobody needs to know that much facts about how earth developed, But the group called phyla started growing because of these conditions

7 0
3 years ago
Read 2 more answers
Other questions:
  • _______ cause(s) populations to change over time.
    15·1 answer
  • Blasphemy is to religion as a treason is to
    7·1 answer
  • Why was the discovery of a natural clock so important
    8·1 answer
  • <img src="https://tex.z-dn.net/?f=5%284x%20%2B%203%29%20-%203%287x%20-%202%29" id="TexFormula1" title="5(4x + 3) - 3(7x - 2)" al
    13·1 answer
  • the reception of a sound creates an impulse that is carried to the Cns. What is responsible. for the transmission of this impuls
    11·1 answer
  • which macromolecules have a basic unit that is composed of phosphate, a sugar ring, and one of five different bases? a. proteins
    13·2 answers
  • Scientists should not repeat experiments to see if their data is reproducible. Please select the best answer from the choices pr
    5·1 answer
  • The carbon dioxide humans breathe out is produced
    10·1 answer
  • Amplify 1.5 force and motion lesson. I NEED HELP!
    7·1 answer
  • How do the sun and moon affect the tides?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!