Crossing Over Meiosis

THE END RESULT OF MEIOSIS IS...

• FOUR UNIDENTICAL GAMETES

• FOUR IDENTICAL GAMETES

• TWO IDENTICAL GAMETES

• TWO UNIDENTICAL GAMETES

MEIOSIS IS NEEDED BECAUSE...

• IT ACTUALLY ISN'T, BUT CAN BE HELPFUL IN SOME ORGANISMS

• TO REDUCE THE CHROMOSOME NUMBER BY HALF

• SO THAT EVERY CELL IS EXACTLY IDENTICAL

• TO MAKE SURE EVERY HUMAN CELL HAS 92 CHROMOSOMES

To find out how much variation an organism with a diploid number of 20 chromosomes would have you would need to do the following

• 20^2

• 2^10

• 2^20

• 10^2

Tags

NGSS.HS-LS3-3

Which part of meiosis produces diversity in gametes?

• DNA replication

• Prophase

• Crossing-over

• Cytokinesis

Meiosis produces daughter cells that are genetically _________ each other.

• identical to

• different from

• superior to

• inferior to

Tags

NGSS.HS-LS3-2

What is the purpose of meiosis?

• to help the organism grow

• to repair damaged cells

• to heal injuries

• to create diversity in offspring

Tags

NGSS.HS-LS3-2

How many daughter cells does meiosis produce?

• 1

• 2

• 3

• 4

The daughter cells produced by meiosis are also called __________.

• somatic cells

• stem cells

• germ cells

• gametes

Tags

NGSS.HS-LS3-2

What kind of cells does meiosis produce?

• haploid

• diploid

Tags

NGSS.HS-LS3-2

What is the primary purpose of crossing over during meiosis?

• To increase genetic diversity

• To reduce chromosome number

• To produce identical gametes

• To repair DNA damage