BIO EXAM PART 2

Gametes are produced by the process of a. meiosis.This answer is correct. b. mitosis. c. crossing-over.

What happens between meiosis I and meiosis II that reduces the number of chromosomes? a. Replication does not occur.This answer is correct. b. Replication occurs twice. c. Metaphase occurs.

Unlike mitosis, meiosis results in the formation of a. diploid cells. b. 2N daughter cells. c. haploid cells.This answer is correct.

If two genes are on the same chromosome and rarely assort independently, a. the genes are probably located close to each other.This answer is correct. b. the genes are probably located far apart from each other. c. crossing-over always occurs between the genes.

The farther apart two genes are located on a chromosome, the a. less likely they are to assort independently. b. less likely they are to be inherited together.This answer is correct. c. more likely they are to be linked.

Avery’s experiments showed that bacteria are transformed by a. DNA.This answer is correct. b. RNA. c. proteins.

What did Griffith observe when he injected a mixture of heat-killed, disease-causing bacteria and live harmless bacteria into mice? a. The harmless bacteria died. b. The mice developed pneumonia.This answer is correct. c. The disease-causing bacteria changed into harmless bacteria.

In eukaryotes, DNA a. is located in the nucleus.This answer is correct. b. floats freely in the cytoplasm. c. is located in the ribosomes.

During mitosis, the a. DNA molecules unwind. b. nucleosomes become more tightly packed.This answer is correct. c. DNA molecules become more tightly coiled.

Which of the following include all the others? a. DNA molecules b. chromosomesThis answer is correct. c. histones