Meiosis

In which phase does crossing-over happen?

• Prophase I

• Prophase II

• Metaphase I

• Anaphase II

Tags

NGSS.HS-LS3-2

WHAT DOES MEIOSIS CREATE?

• CHROMOSOMES

• GAMETES

• DNA

• TRAITS

Tags

NGSS.HS-LS3-2

THE END RESULT OF MEIOSIS IS...

• FOUR UNIDENTICAL GAMETES

• FOUR IDENTICAL GAMETES

• TWO IDENTICAL GAMETES

• TWO UNIDENTICAL GAMETES

THE GAMETES ARE CONSIDERED TO HAVE ONE HALF OF THE GENETIC INFO SO IT IS CALL

• DIPLOID (2N)

• DIPLOID (N)

• HAPLOID (2N)

• HAPLOID (N)

Tags

NGSS.HS-LS3-2

MALE GAMETE IS KNOWN AS

• EGG

• SPERM

A FEMALE GAMETE IS KNOWN AS

• EGG

• SPERM

HOW MANY CHROMOSOMES DO HUMAN GAMETES HAVE?

• 46

• 23

• 47

• 22

CROSSING OVER ALLOWS FOR WHAT TO HAPPEN?

• ALL CELLS TO STAY THE SAME

• GENETIC VARIATION

• REDUCTION OF CHROMOSOMES

• CHROMOSOME NUMBER TO INCREASE

Tags

NGSS.HS-LS3-2

THIS IMAGE SHOWS WHAT IS HAPPENING WITH THE CHROMOSOMES?

• NON- DISJUNCTION

• METAPHASE

• TELOPHASE

• CROSSING OVER

What effect does crossing over has in terms of traits of offspring?

• Results in identical traits of offsprings.

• Causes variation in the traits of offsprings.

• It really does nothing to the traits of offspring.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1