Question

19 multiple choice 2 points regular body cells are also known as __________ cells and are ________, or diploid. gametes; n somatic; n gametes; 2n somatic; 2n 20 multiple choice 2 points matched pairs of chromosomes which are the same length and contain the same genes on the same locus are called ________ sister chromatids genes homologous chromosomes genomes 21 multiple choice 2 points a diploid cell has ____ the number of chromosomes as a haploid cell. five times the same twice half

Explanation:

1. Regular body cells are somatic cells and are diploid (2N). Gametes are sex - cells and are haploid (N).
2. Matched pairs of chromosomes with the same length and gene - locus are homologous chromosomes. Sister chromatids are identical copies formed during DNA replication, genes are segments of DNA, and genomes are the complete set of an organism's genetic material.
3. A diploid cell has twice the number of chromosomes as a haploid cell. Haploid cells have a single set of chromosomes (N), and diploid cells have two sets (2N).

Answer:

1. D. somatic; 2N
2. C. homologous chromosomes
3. C. twice