Meiosis

Question 1

What type of cells are produced by meiosis?

Answer 1

Haploid cells

Question 2

Meiosis is a reduction division true or false

Answer 2

True

Question 3

How many phases are there in meiosis?

Answer 3

2 stages meiosis i and meiosis ii

Question 4

How many chromosomes are formed before meiosis I.

Answer 4

4n or 92

Question 5

How many haploid gametes are produced after meiosis?

Answer 5

4

Question 6

What are the phases of prophase i in order?

Answer 6

Leptotene, Zygotene pachytene Diplotene and diokenisis

Question 7

What does crossing over entail

Answer 7

The exchange of alleles between two homologous chromosomes

Question 8

What is an allele

Answer 8

Different forms of the same gene

Question 9

What occurs during leptotene?

Answer 9

Condensation begins and chromosmeres begin to form

Question 10

What is a synaptonemal complex?

Answer 10

The point at which homologous chromosomes are fused during synapses

Question 11

What is a bivalent

Answer 11

Two fused homologous chromosomes

Question 12

What is the result of crossing over?

Answer 12

Gene recombination

Question 13

Where does crossing over occur?

Answer 13

In the chiasmata

Question 14

What happens during Diplotene

Answer 14

The bivalent separates.
The chiasmata begins terminalization
The chiasma is the only part of the bivalent attached.

Question 15

What is the distinguish factor of diakinesis ?

Answer 15

Terminalization of chiasmata and disappearance if synaptonemal complex

Question 16

What are two forms of genetic variation

Answer 16

Independent assortment and crossing over

Question 17

What is associated with pachytene?

Answer 17

Further condensation and crossing over

Question 18

Why must the chromosomes be aligned during crossing over

Answer 18

In order for the portions to respond

Question 19

When does independence assortment occur?

Answer 19

Metaphase I

Question 20

What is the difference between Metaphase I of meiosis and metaphase in mitosis?

Answer 20

In mitosis sister chromatids are separated but in meiosis homologous chromosomes are separated

Question 21

What is disjunction and when does it occur?

Answer 21

It is the separation of homologous chromosomes
It occurs during anaphase I

Question 22

How many chromosomes are formed at the end of meiosis I

Answer 22

46

Question 23

What is the significance of meiosis?

Answer 23

Sexual reproduction and genetic variation