Unit 6 Review Game Page 1 1 The,,, and O blood types found in humans refer to the genotype. phenotype. quality of the blood. frequency of the alleles. size of the red blood cells. 2 In a two-factor cross, a phenotypic ratio of 9:3:3:1 in the offspring of a cross indicates that both parents are homozygous dominant. both parents are heterozygous for both genes. one parent is homozygous dominant and one parent is heterozygous. one parent is heterozygous and one parent is homozygous recessive. one parent is homozygous dominant and one parent is homozygous recessive. 3 Skin color and height in humans are influenced by the combined effects of multiple genes. This is called epistasis. codominance. polygenic inheritance. incomplete dominance. sex-linked inheritance. 4 olor blindness is an X-linked recessive trait. color-blind man has a daughter with normal color vision. What is the genotype of the daughter? XcY XY XcXc XX XXc 5 s shown in this diagram, eye color in fruit flies is an example of a(n) polygenic trait. sex-linked trait. codominant trait. intermediate trait. multifactorial trait. 11/29/2011 9:05:31 M
Unit 6 Review Game Page 2 6 Freckles (F) and a widow's peak (W) are dominant human traits. John and Sarah have both, but their son asey has neither. What are John and Sarah's genotypes? Ff and Ww FfWw and FfWW FfWw and FfWw FFWW and ffww FFff and WWww 7 oat color in Labrador retrievers is an example of epistasis, in which a single trait is influenced by two separate genes. What is this dog's genotype? =black melanin, b=brown melanin =full deposition, e=reduced deposition b bee bbe bbee be 8 Which of the individuals is homozygous dominant for both of the allele pairs? the male parent the F1 generation the female parent both the male and female parents both the male parent and the F1 generation 11/29/2011 9:05:31 M
Unit 6 Review Game Page 3 9 woman with type blood marries a man with type O. What is the probability that their first child will have either of the parents' blood types? 0% 25% 50% 75% 100% 10 ndalusian chickens with the genotype are black, those with the genotype WW are white, and those with the genotype W are gray. What is the expected phenotypic ratio of a W x W cross? 1 black : 1 gray 3 gray : 1 white 1 black : 1 white 3 black : 1 white 1 black : 2 gray : 1 white 11 In a situation in which genes assort independently, what is the ratio of the gametes produced by an a individual? 1 : 1 3 : 1 3 : 1 ab 1 : 1 a 3 : 1 12 The results of the following cross indicates that the the two genes are linked. the Mendlien species is polyploid. the two genes do not assort independently. the absence of a tooth is dominant to vertical eyes. both and 11/29/2011 9:05:31 M
Unit 6 Review Game Page 4 13 OoWw x ooww cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of the following best explains these results? Mendel's law of segregation is being violated. The genes for eye color and skin color are co-dominant. Mendel's law of independent assortment is being violated. Mendel's laws of segregation and independent assortment are being violated. The heterozygous individual is male, and the homozygous individual is female. 14 The recombination frequency between gene and gene is 2.4%, the recombination frequency between gene and gene is 10.8%, and the recombination frequency between gene and gene is 8.4%. Which of these is the correct arrangement of these genes? 15 The results of a F1 testcross are: 219 bald head, four ears : 221 hairy head, six ears : 31 bald head, six ears : 29 hairy head, four ears. How many map units apart are the head and ear genes? 3.5 3.9 7.5 12.0 92.6 16 Humans are diploid and have 46 chromosomes. How many chromosomes are found in each human gamete? 12 23 36 45 92 11/29/2011 9:05:31 M
Unit 6 Review Game Page 5 17 Given these chromosomes, which of the choices represents the possible recombinant gametes? 18 Which of these terms applies to an organism with extra sets of chromosomes? diploid haploid trisomy polyploid monosomy 11/29/2011 9:05:31 M
Unit 6 Review Game Page 6 19 Suppose that having three nostrils is a dominant Y-linked character. woman with two nostrils mates with a man with three nostrils. What is the expected phenotypic ratio of their offspring? 1 daughter with two nostrils : 1 son with three nostrils 2 daughters with two nostrils: 1 son with two nostrils: 1 son with three nostrils 2 daughters with three nostrils: 1 son with two nostrils: 1 son with three nostrils 2 sons with two nostrils: 1 daughter with two nostrils: 1 daughter with three nostrils 1 daughter with two nostrils: 1 daughter with three nostrils: 1 son with two nostrils : 1 son with three nostrils 20 Hypophosphatemia (vitamin -resistant rickets) is inherited as an X-linked dominant. woman without hypophosphatemia and a man with hypophosphatemia have a daughter. The daughter mates with a male without hypophosphatemia. What is the expected phenotypic ratio of their offspring? 1 unaffected daughter : 1 son with hypophosphatemia 1 daughter with hypophosphatemia : 1 unaffected son 3 unaffected females : 1 male with hypophosphatemia 2 unaffected females : 1 unaffected male : 1 male with hypophosphatemia 1 unaffected female : 1 female with hypophosphatemia : 1 unaffected male : 1 male with hypophosphatemia 11/29/2011 9:05:31 M
Unit 6 Review Game Page 7 nswer Key : Unit 6 Review Game Question: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 nswer 11/29/2011 9:05:31 M