Chapter 9

Meiosis and cytoplasmic division function in ____________. a. asexual reproduction of single-celled eukaryotes b. growth, tissue repair, often asexual reproduction c. sexual reproduction d. both b and c

A duplicated chromosome has ___________ chromatid(s). a. one b. two c. three d. four

3\. A somatic cell having two of each type of chromosome has a(n) ____________ chromosome number. a. diploid b. haploid c. tetraploid d. abnormal

Sexual reproduction requires _________. a. meiosis b. fertilization c. gamete formation d. all of the above

Generally, a pair of homologous chromosomes ______________. a. carry the same genes b. are the same length, shape c. interact at meiosis d.all of the above

Meiosis __________ the parental chromosome number. a. doubles b. halves c. maintains d. corrupts

Meiosis is a division mechanism that produces ____________. a. two cells b. two nuclei c. eight cells d. four nuclei

Pairs of duplicated, homologous chromosomes end up at opposite spindle poles during ___________. a. prophase I b. prophase II c. anaphase I d. anaphase II

Sister chromatids of each duplicated chromosome end up at opposite spindle poles during _____________. a. prophase I b. prophase II c. anaphase I d. anaphase II

Match each term with its description. _________chromosome number _________alleles _________metaphase I _________interphase a. different molecular forms of the same gene b. none between meiosis I, II c. all chromosomes aligned at spindle equator d. all chromosomes of a given type