2b.6- Video (Biology)

What is the primary outcome of independent assortment during meiosis?

• Formation of identical gametes

• Failure of chromosomes to separate

• Random distribution of alleles into gametes

• Exchange of genetic material between chromatids

How does crossing over contribute to genetic variation?

• By recombining alleles between non-sister chromatids

• By swapping genetic material between sister chromatids

• By ensuring identical alleles in gametes

• By preventing chromosome separation

Tags

NGSS.HS-LS3-2

During which phase of meiosis does crossing over occur?

• Telophase I

• Prophase I

• Anaphase II

• Metaphase I

Tags

NGSS.HS-LS3-2

What is the result of nondisjunction during meiosis?

• Increased genetic diversity

• Gametes with an extra or missing chromosome

• Identical gametes

• Normal distribution of chromosomes

Which chromosomal disorder is associated with nondisjunction?

• Cystic fibrosis

• Sickle cell anemia

• Down syndrome

• Huntington's disease