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QUIZ 4.

Biol 1406

Name ___________________________________

1. Nucleotides in one strand of DNA are connected to 7. What are alleles? the ones in the other strand by: a. peptide bonds. b. hydrogen bonds. c. phosphodiester bonds. d. reversible bonding. e. chance.

2. In a DNA duplex, the base G is always paired with: a. b. c. d. guanine. cytosine. thymine. uracil. e. deoxyribose.

3. The enzyme which makes a primer, allowing replication to begin is called: a. specific physical locations of genes on a chromosome b. variations of the same gene (i.e., similar nucleotide sequences on homologous chromosomes) c. homozygotes d. heterozygotes

8. A single gene capable of influencing multiple phenotypes within a single organism is said to be __________. a. codominant for that gene b. incompletely dominant for that gene c. polygenic for that gene d. pleiotropic for that gene a. b. c. d. primase.

DNA replicase. reverse transcriptase. helicase. e. DNA litigase.

4. The enzyme which makes a copy of the

DNA during DNA replication is: a. b. c. d. primase.

DNA polymerase gyrase.

RNA polymerase e. helicase.

5. Experiments using mice and bacteria, showing the process of transformation, were performed by: a. Watson and Crick b. Mendel c. Beadle and Tatum d. Rosalin Franklin e. Griffith

6. What happens if a baby has only one X chromosome, and no Y?

9. A plant has a dominant phenotype but an unknown genotype. The proper experiment to determine its correct genotype would be a/an: a. heterozygotic cross. b. testcross. c. homozytic cross. d. F1 cross. e. back cross.

10. The Law of Segregation (Mendel) is best demonstrated using: a. a monohybrid cross. b. a dihybrid cross c. a testcross. d. a back cross. e.

two recessive varieties of the gene under study

. a. Such a major chromosome deficiency is lethal, so the baby would be stillborn. b. This baby would be a female with Turner syndrome. c. The baby would be a male with Turner syndrome. d. The individual would have

Klinefelter syndrome.

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