Meiosis Review

What causes genetic variation in meiosis?

• chromosomes lining up

• crossing over of chromosomes

• separation of chromosomes

• chromosomes pulling apart

Tags

NGSS.HS-LS3-2

The end result of meiosis is...

• four unidentical gametes

• four identical gametes

• two identical gametes

• two unidentical gametes

How many chromosomes do human gametes have?

• 46

• 23

• 47

• 22

What is the purpose of crossing over?

• for all cells to stay the same

• reduction of chromosomes

• for chromosome number to increase

• genetic variation

Which phase of meiosis does this represent?

• anaphase I

• anaphase II

• metaphase I

• metaphase II

Which phase of meiosis does this represent?

• telophase I

• telophase II

• prophase I

• prophase II

Tags

NGSS.HS-LS3-2

When homologous chromosomes math up, they form a structure called a ______.

What is the structure at A and B called?

b

a

A - Centromere

B - Telomere

Reorder the following

• Anaphase

• Prophase

• Metaphase

• Telophase

Tags

NGSS.HS-LS1-4

The nuclear membrane dissolves during _____.