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. a cell ceases to function b. a cell forms its spindle apparatus c. a cell grows and duplicates its DNA d. mitosis proceeds

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

Sexual reproduction always requires________. a. mitosis b. fertilization c. spore formation d. 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