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
garri49 [273]
3 years ago
5

What are the phases of meiosis where crossing over occur

Biology
1 answer:
ehidna [41]3 years ago
5 0

Answer:

Prophase 1

Explanation:

Prophase I :It can be divided into five stages:

1)Leplotene: In this stage, chromosome becomes visible and shorten as a single structure.

2)Zygotene: Homologous / sister chromosome pair up. This process is known as synapse. Synapse is the process of attachment of homologous /sister chromosome. One pair comes from the male parent while the other comes from the female parent.

3)Pachytene: Bivalents shorten.

4)Diplotene:Point of attachment of non-sister chromatids. The two chromosomes are seen to be joined at several points along their length. These points are known as Chiasmata.(Chiasmata, a cross). The paternal gene A, B, C may swap for the maternal gene a, b, c for instance, leading to a new gene combination in the resulting chromatids. This is referred to as *CROSSING OVER*.

5)Diakenesis: Homologous centromere move apart.

So, crossing over occurs in *Prophase 1.

You might be interested in
Why does frozen water take on the pattern it does (hint: it has to do with water’s polarity)?
damaskus [11]

When ice forms, one water molecule's hydrogen atoms form weak hydrogen bonds with the tops of the oxygen atoms of two other water molecules. Lining up the water molecules in this pattern takes up more space than randomly arranging them.

<h3>What is polarity?</h3>

A physical property of compounds that connects other physical properties like melting and boiling points, solubility, and intermolecular interactions between molecules is referred to as polarity.

When ice forms, one water molecule's hydrogen atoms form weak hydrogen bonds with the tops of the oxygen atoms of two other water molecules.

Lining up the water molecules in this pattern takes up more space than randomly arranging them.

When water freezes, the water molecules slow down enough that their attractions arrange them into fixed positions. Water molecules freeze in a hexagonal pattern, with molecules further apart than when the water was liquid.

Thus, because of this frozen water take on the pattern it does.

For more details regarding polarity, visit:

brainly.com/question/2615067

#SPJ1

4 0
2 years ago
In fruit flies long wings are dominant to short wings what is the genotype of each parent A) WW;Ww B)Ww;ww C) Ww;Ww D)WW;WW
Contact [7]
Your answer is C) Ww;Ww
3 0
3 years ago
How many covalent bonds can a typical carbon atom form?
Sedaia [141]

Hey! I'm pretty sure this is chemistry instead of biology haha

But anyways, a typical carbon atom can form up to 4 covalent bonds!

5 0
3 years ago
Read 2 more answers
What's going on in the photo?
Margarita [4]

Answer:

This is the lytic cycle.

Explanation:

The lytic cycle is one of the two cycles of viral reproduction, the other being the lysogenic cycle. The lytic cycle results in the destruction of the infected cell and its membrane. Bacteriophages that only use the lytic cycle are called virulent phages. It is a type of viral reproduction.

Hope this helps!

4 0
3 years ago
Which type of drug has never played a role in health care? opiates depressants inhalants stimulants?
Nady [450]
<span>I think that inhalants are a delivery method and not necessarily a drug type. The other three listed are actual drug types and are used in physical and mental health prescriptions. Inhalants are typically non-prescription/illegal drugs.</span>
5 0
3 years ago
Other questions:
  • Which of these statements is false? 1.Cell processes affect the entire biosphere. 2.Cell processes affect all of bodily function
    6·2 answers
  • Which of the following are phagocytic?
    9·1 answer
  • Explain why a phenotype might not always indicate genotype
    13·2 answers
  • Explain why an enzyme can no longer function once it has been denatured
    13·1 answer
  • The proposed kingdom Euglenozoa includes protists with one or two _____ emerging from an anterior pocket.
    12·1 answer
  • What are the weakness and strengths of Behavior​
    8·2 answers
  • Mapa conceptual de las celulas
    14·1 answer
  • "A total artificial heart (TAH) is an electrically powered pump that circulates blood into the pulmonary artery and the aorta, t
    15·1 answer
  • Why do farmers spray pesticides and insecticides in the field​
    12·1 answer
  • What describes the place in an evolutionary tree that represents a currently living population?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!