study guide review chapter 13

Question 1

what is the diploid number for humans?

Answer 1

46 because 23 + 23

Question 2

what are sister chromatids?

Answer 2

sister chromatids are identical and in one chromosome together

Question 3

what are homologous chromosomes?

Answer 3

a pair of chromosomes; one from mom one from dad

Question 4

what happens in prophase one? for meiosis

Answer 4

crossing over occurs

Question 5

what happens in metaphase one? for meiosis

Answer 5

homologous chromosomes line up as pairs in the middle

Question 6

what happens in anaphase one? for meiosis

Answer 6

homologous chromosomes separate, move towards opposite poles

Question 7

what happens in telophase one? for meiosis

Answer 7

separates into haploid set of chromosomes still with sister chromatids intact but cytokinesis occurs simultaneously forming 2 haploid daughter cells

Question 8

what types of cells undergo mitosis vs meiosis?

Answer 8

diploid and haploid can undergo mitosis, but only diploid can undergo meiosis

Question 9

do mitosis or meiosis produce genetically identical or not?

Answer 9

mitosis produces genetically identical, meiosis does not

Question 10

in general what happens in meiosis 2?

Answer 10

sister chromatids separate into haploid cells and produce 4 daughter cells

Question 11

what does crossing over occur between?

Answer 11

non sister chromatids