Section 3-4: Sexual Reproduction & Meiosis

Question 1

homologous chromosomes

Answer 1

not identical

Question 2

sister chromatids

Answer 2

identical

Question 3

meiosis I prophase differences

Answer 3

homologous chromosomes pair with eachother
crossing-over (recombination)

Question 4

meiosis I anaphase differences

Answer 4

homologous chromosomes move to opposite poles
random assortment of chromosomes

Question 5

meiois II anaphase differences

Answer 5

chromatids are separated into 2 daughter chromosomes

Question 6

genetic variations

Answer 6

random assortment of DNA segments
random combination of gametes (fertilization)

Question 7

prophase 1 genetic variation

Answer 7

recombination between homologous chromosomes

Question 8

metaphase/anaphase I genetic variation

Answer 8

random assortment of individual chromosomes

Question 9

are the majority of cells in your body diploid or haploid?

Answer 9

diploid

Question 10

what process converts diploid cells to haploid?

Answer 10

meiosis

Question 11

what process converts haploid cells to diploid?

Answer 11

fertilization

Question 12

which stages of meiosis are replicated chromosomes present?

Answer 12

after s phase of interphase until anaphase II

Question 13

which stages of meiosis are paired homologous chromosomes presento?

Answer 13

beginning until anaphase I

Question 14

which stages of meiosis are DNA segments shuffled between homologous chromosomes?

Answer 14

prophase I

Question 15

3 ways of generating genetic variation during sexual reproduction

Answer 15

fertilization, recombination, random assortment

Question 16

2 ways of generating genetic variation other than through sexual reproduction

Answer 16

mutations
transposons

Question 17

missense mutation

Answer 17

change in codon

Question 18

silent mutation

Answer 18

no change in codon

Question 19

nonsense mutation

Answer 19

change to stop codon