7. If an organism that is homozygous recessive for a trait is crossed with a heterozygote, what is the chance of getting a homozygous recessive phenotype in the first generation? A. B. C. D. 0% 25% 50% 100%

A testcross with a homozygous dominant genotype should lead to progeny that: a. All have a homozygous dominant genotype b. All exhibit a recessive phenotype c. All exhibit a dominant phenotype d. All die, since exclusively homozygous recessive progeny are made e. Have a 3:1 dominant to recessive phenotype

Identify the term that best matches the definition or description given. a. incomplete dominance b. codominance f. linked genes g. sex-linked trait h. bioinformatics c. heterozygous advantage d. continuous variation i. genetic profile j. genomics e. polygenic trait 61. a trait controlled by many genes 62. a trait found on the X or Y chromosome 63. Neither allele completely conceals the other. 64. when there is a survival benefit to individuals with two different alleles 65. using computer technology to analyze databases of information 66. Both alleles are equally expressed. 67. genes that are on the same chromosome 68. a range in gene expression resulting from the activity of many genes 69. the complete genotype of an individual 70. the study of the complex interactions in genes resulting in phenotypes

44. In pea plants, the tall phenotype is dominant to the dwarf phenotype. If a heterozygous pea plant is crossed with a homozygous tall pea plant, what is the probability that the offspring will be dwarf in size? A. 1 В. О С. 0.5 D. 0.25 45.A cross where we follow the inheritance of 2 pairs of alleles is called A. monohybrid. B. dihybrid. C. heterozygous. D. diallelic. 46. Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What are the genotypes of the gametes that are produced by a plant that is heterozygous for both traits? A. PT and pt B. P, p, T, and t C. PT, Pt, pT, and pt D. Tt, TT, tt, Pp. PP, and pp 47. During DNA replication, DNA pol III synthesizes the lagging strand in segments, called A. replication fragments. B. Chargaffs segments. C. replisomes. D. Okazaki fragments. 48. If a short sequence of DNA is 5' AATTGCCGT 3', its complement is A. 3' TTAACGGCT 5'. B. 3' TTAAGCCGA 5'. C. 3' TTAAGCCGU 5'. D. 3' TTAACGGCA 5'.