Chapter 8

How many chromatids does a duplicated chromosome have?

Mitosis and cytoplasmic division function in __________. a. asexual reproduction of single-celled eukaryotes b. growth and tissue repair in multicelled species c. gamete formation in prokaryotes d. both a and b

__________ maintains the chromosome number; __________ halves it. a. mitosis; meiosis b. meiosis; mitosis

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

A cell with two of each type of chromosome has \(a(n)\) __________ chromosome number. a. diploid b. haploid c. tetraploid d. abnormal

Interphase is the part of the cell cycle when __________. a. a cell ceases to function b. a cell forms its spindle apparatus c. a cell grows and duplicates its DNA d. mitosis proceeds

After mitosis, the chromosome number of the two new cells is __________ the parent cell's. a. the same as b. one-half of c. rearranged compared to d. doubled compared to

Only __________ is not a stage of mitosis. a. prophase b. interphase c. metaphase d. anaphase

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

What is the name for alternative forms of the same gene?

Match each term with the best description. __________prophase __________telophase __________metaphase I __________metaphase II __________interphase __________anaphase II __________prophase I __________anaphase I a. homologous chromosomes aligned at the spindle equator b. maybe none between meiosis I, II c. unduplicated chromosomes aligned at the spindle equator d. chromosomes start to condense e. new nuclei form f. homologous chromosomes move apart g. sister chromatids move apart h. homologues swap segments