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Dr. Taub’s lectures have been A: Terrible B: Barely acceptable C: Quite good D: Beyond awesome!

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Presentation on theme: "Dr. Taub’s lectures have been A: Terrible B: Barely acceptable C: Quite good D: Beyond awesome!"— Presentation transcript:

1 Dr. Taub’s lectures have been A: Terrible B: Barely acceptable C: Quite good D: Beyond awesome!

2 Dr. Taub’s lectures have been A: Terrible B: Barely acceptable C: Quite good D: Beyond awesome!

3 Using the variables we have been discussing, how many individuals will be born in a population during one time interval? A: d B: b C: bN D: dN

4 Using the variables we have been discussing, how many individuals will be born in a population during one time interval? A: d B: b C: bN D: dN

5 What is the growth rate of a logistically growing population when N=K? A: 0 (zero) B: r max N C: r max D: K-r max

6 What is the growth rate of a logistically growing population when N=K? A: 0 (zero) B: r max N C: r max D: K-r max

7 What happens to a logistically growing population that is above its carrying capacity? A: The population remains stable B: The population grows C: The population declines D: The population increases to infinity

8 What happens to a logistically growing population that is above its carrying capacity? A: The population remains stable B: The population grows C: The population declines D: The population increases to infinity

9 If we were to cross a white-flowered individual with a heterozygote for the flower color locus, what proportion of purple and white-flowered individuals would we expect among their offspring? A: 1/2 purple, 1/2 white B: 2/3 purple, 1/3 white C: 3/4 purple, 1/4 white D: all purple

10 If we were to cross a white-flowered individual with a heterozygote for the flower color locus, what proportion of purple and white-flowered individuals would we expect among their offspring? A: 1/2 purple, 1/2 white B: 2/3 purple, 1/3 white C: 3/4 purple, 1/4 white D: all purple

11 For seed color in peas, yellow is dominant and green is recessive. If we were to cross a heterozygote with a yellow homozygote, what proportion of yellow and green seeded individuals would we expect among their progeny? A: 1/2 yellow, 1/2 green B: 2/3 yellow, 1/3 green C: 3/4 yellow, 1/4 green D: all yellow

12 For seed color in peas, yellow is dominant and green is recessive. If we were to cross a heterozygote with a yellow homozygote, what proportion of yellow and green seeded individuals would we expect among their progeny? A: 1/2 yellow, 1/2 green B: 2/3 yellow, 1/3 green C: 3/4 yellow, 1/4 green D: all yellow

13 We cross a purple-flowered pea with a white-flowered pea. We produce 100 offspring from this cross. 1/2 of the offspring have purple flowers and 1/2 have white flowers What is the genotype of the purple-flowered individual? A: FF B: ff C: Ff

14 We cross a purple-flowered pea with a white-flowered pea. We produce 100 offspring from this cross. 1/2 of the offspring have purple flowers and 1/2 have white flowers What is the genotype of the purple-flowered individual? A: FF B: ff C: Ff

15 The A locus codes for hair color (A=auburn, a=red) and the B locus codes for size (B=big, b=small). If we cross an individual with genotype AaBb with an individual with genotype AAbb, what proportion of phenotypes do we expect to see in their offspring? A: 1/2 auburn small, 1/2 red big B: 9/16 auburn big, 3/16 auburn small, 3/16 red big, 1/16 red small C: 1/2 auburn big, 1/2 auburn small D: all auburn big

16 The A locus codes for hair color (A=auburn, a=red) and the B locus codes for size (B=big, b=small). If we cross an individual with genotype AaBb with an individual with genotype AAbb, what proportion of phenotypes do we expect to see in their offspring? A: 1/2 auburn small, 1/2 red big B: 9/16 auburn big, 3/16 auburn small, 3/16 red big, 1/16 red small C: 1/2 auburn big, 1/2 auburn small D: all auburn big

17 In Graco’s Zebras, the lip locus controls the size of an individual’s lips. Small lips are dominant and large lips are recessive. The height locus controls how tall an individual is. Tall is dominant and short is recessive. We cross an individual who is a heterozygote for the height locus and has large lips with an individual who is short and is heterozygous for the lip locus. We expect their children to be: A:1/4 tall big lips, 1/2 tall small lips, 1/4 short big lips B: 1/4 tall big lips, 1/4 tall small lips, 1/4 short big lips,1/4 short small lips C: 1/2 tall small lips, 1/2 short small lips D: 1/2 short small lips, 1/2 short big lips

18 In Graco’s Zebras, the lip locus controls the size of an individual’s lips. Small lips are dominant and large lips are recessive. The height locus controls how tall an individual is. Tall is dominant and short is recessive. We cross an individual who is a heterozygote for the height locus and has large lips with an individual who is short and is heterozygous for the lip locus. We expect their children to be: A:1/4 tall big lips, 1/2 tall small lips, 1/4 short big lips B: 1/4 tall big lips, 1/4 tall small lips, 1/4 short big lips,1/4 short small lips C: 1/2 tall small lips, 1/2 short small lips D: 1/2 short small lips, 1/2 short big lips

19 We cross a totally black individual with an individual with a genotype ofAaBBDd. What ratio of phenotypes do we expect in their offspring? A: B: C: D: Doses of pigmentation

20 We cross a totally black individual with an individual with a genotype ofAaBBDd. What ratio of phenotypes do we expect in their offspring? A: B: C: D: Doses of pigmentation

21 We cross an individual with a genotype of AABbDd with one of genotype AaBBDD. What ratio of phenotypes do we expect in their offspring? A: B: C: D: Doses of pigmentation

22 We cross an individual with a genotype of AABbDd with one of genotype AaBBDD. What ratio of phenotypes do we expect in their offspring? A: B: C: D: Doses of pigmentation

23 Purple, oblong Red, oblong Purple, spherical Red, spherical A:1/83 /8 1 /8 B:1/200 C:9/163/16 1/16 D:1/4 In Unger’s spiderwort, the genes for flower color and flower shape are on different chromosomes. Purple flowers and oblong flowers are dominant. In a cross between a double heterozygote and a double recessive homozygote, what phenotypic proportions are expected?

24 Purple, oblong Red, oblong Purple, spherical Red, spherical A:1/83 /8 1 /8 B:1/200 C:9/163/16 1/16 D:1/4 In Unger’s spiderwort, the genes for flower color and flower shape are on different chromosomes. Purple flowers and oblong flowers are dominant. In a cross between a double heterozygote and a double recessive homozygote, what phenotypic proportions are expected?

25 Purple, oblong Red, oblong Purple, spherical Red, spherical A:1/83 /8 1 /8 B:1/200 C:9/163/16 1/16 D:1/4 What if the genes for flower color and flower shape are completely linked? Purple flowers and oblong flowers are dominant. In a cross between a double heterozygote FH/fh and a double recessive homozygote, what phenotypic proportions are expected?

26 Purple, oblong Red, oblong Purple, spherical Red, spherical A:1/83 /8 1 /8 B:1/200 C:9/163/16 1/16 D:1/4 What if the genes for flower color and flower shape are completely linked? Purple flowers and oblong flowers are dominant. In a cross between a double heterozygote FH/fh and a double recessive homozygote, what phenotypic proportions are expected?

27 Linkage means: A: Two genes become separated by crossing- over during meiotic prophase I B: Two alleles are always present together on the same chromosome C: Two genes are located on the same chromosome and do not assort independently D: Recombination takes place at a high rate between two alleles

28 Linkage means: A: Two genes become separated by crossing- over during meiotic prophase I B: Two alleles are always present together on the same chromosome C: Two genes are located on the same chromosome and do not assort independently D: Recombination takes place at a high rate between two alleles

29 If there were no crossing-over, what would be different than the way things actually are today? A: Linkage would not exist between any pairs of genes B: The recombination rate between genes on the same chromosome would be zero C: There would be no independent assortment of any pairs of genes D: Linkage would be limited to pairs of genes located on the same chromosome

30 If there were no crossing-over, what would be different than the way things actually are today? A: Linkage would not exist between any pairs of genes B: The recombination rate between genes on the same chromosome would be zero C: There would be no independent assortment of any pairs of genes D: Linkage would be limited to pairs of genes located on the same chromosome

31 Purple, oblong Red, oblong Purple, spherical Red, spherical 16%35%31%18% In a cross between a double heterozygote Fh/fH and a double recessive homozygote, we obtain The following % of offspring What is the recombination frequency for this pair of genes? A: 16 % B: 17% C: 34% D: 66%

32 Purple, oblong Red, oblong Purple, spherical Red, spherical 16%35%31%18% In a cross between a double heterozygote Fh/fH and a double recessive homozygote, we obtain The following % of offspring What is the recombination frequency for this pair of genes? A: 16 % B: 17% C: 34% D: 66%

33 We observe the following recombination frequencies for four genes on the same chromosome: af 12% ag 19% ah 7% fg 9% fh 17% gh 24% The order of these genes along the chromosome is A: hgfa B: gafh C: gfha D: gfah

34 We observe the following recombination frequencies for four genes on the same chromosome: af 12% ag 19% ah 7% fg 9% fh 17% gh 24% The order of these genes along the chromosome is A: hgfa B: gafh C: gfha D: gfah

35 Toe diameter is a an X-linked character. Skinny toes is dominant over fat toes. We cross a skinny toed male with a heterozygote female. What do we expect for toe diameter in their children? A: Their sons will have skinny toes, and their daughters will have fat toes B: Their daughters will have skinny toes, and their sons will have fat toes C: Half of their sons will have fat toes, and all their daughters will have skinny toes D: Half of their daughters will have fat toes, and all their sons will have skinny toes

36 Toe diameter is a an X-linked character. Skinny toes is dominant over fat toes. We cross a skinny toed male with a heterozygote female. What do we expect for toe diameter in their children? A: Their sons will have skinny toes, and their daughters will have fat toes B: Their daughters will have skinny toes, and their sons will have fat toes C: Half of their sons will have fat toes, and all their daughters will have skinny toes D: Half of their daughters will have fat toes, and all their sons will have skinny toes

37 Two individuals without a genetic disorder mate and produce a child with a genetic disorder. This disorder: A: Might be a simple recessive disorder, but is unlikely to be a simple dominant disorder B: Might be a simple dominant disorder, but is unlikely to be a simple recessive disorder C: Might well be either a simple recessive or a simple dominant disorder D: Is unlikely to be either a simple recessive or a simple dominant disorder

38 Two individuals without a genetic disorder mate and produce a child with a genetic disorder. This disorder: A: Might be a simple recessive disorder, but is unlikely to be a simple dominant disorder B: Might be a simple dominant disorder, but is unlikely to be a simple recessive disorder C: Might well be either a simple recessive or a simple dominant disorder D: Is unlikely to be either a simple recessive or a simple dominant disorder

39 Two individuals with a genetic disorder mate. 101 of their 412 offspring have the disorder, and the rest do not. This disorder: A: Might be a simple recessive disorder, but is unlikely to be a simple dominant disorder B: Might be a simple dominant disorder, but is unlikely to be a simple recessive disorder C: Might well be either a simple recessive or a simple dominant disorder D: Is unlikely to be either a simple recessive or a simple dominant disorder

40 Two individuals with a genetic disorder mate. 101 of their 412 offspring have the disorder, and the rest do not. This disorder: A: Might be a simple recessive disorder, but is unlikely to be a simple dominant disorder B: Might be a simple dominant disorder, but is unlikely to be a simple recessive disorder C: Might well be either a simple recessive or a simple dominant disorder D: Is unlikely to be either a simple recessive or a simple dominant disorder

41 If there are 500 individuals in a population, how many copies of each gene will there be in the gene pool? A: 250 B: 500 C: 501 D: 1000

42 If there are 500 individuals in a population, how many copies of each gene will there be in the gene pool? A: 250 B: 500 C: 501 D: 1000

43 We find in a population that we have 250 individuals with the genotype AA, 125 with the genotype Aa and 125 with the genotype aa. What is the frequency of the a allele? A: 12.5 % B: 25 % C: 37.5 % D: 50%

44 We find in a population that we have 250 individuals with the genotype AA, 125 with the genotype Aa and 125 with the genotype aa. What is the frequency of the a allele? A: 12.5 % B: 25 % C: 37.5 % D: 50%

45 The genotype frequencies for the G locus in a certain population are GG: 0.56 Gg: 0.28 gg: 0.16 What are the gamete frequencies produced by this population? A: G 84% g 44% B: G 70% g 30% C: G 56% g 16% D: G 84% g 16%

46

47 What are the expected diploid genotype frequencies in the next generation of this population, assuming random mating? A: G 70% g 30% B: G 56% g 16% C: GG 49% Gg 42% gg 9% D: GG 56% Gg 28% gg 16%

48 What are the expected diploid genotype frequencies in the next generation of this population, assuming random mating? A: G 70% g 30% B: G 56% g 16% C: GG 49% Gg 42% gg 9% D: GG 56% Gg 28% gg 16%

49 We have a population of 500 individuals, and the genotype frequencies for the EFF gene are: FF: 395 Ff:10 ff:95 What are the actual allele frequencies? A: F=.89 f=.11 B: F=.80 f=.20 C: F=.79 f=.19 D: F=.40 f=.10

50 We have a population of 500 individuals, and the genotype frequencies for the EFF gene are: FF: 395 Ff:10 ff:95 What are the actual allele frequencies? A: F=.89 f=.11 B: F=.80 f=.20 C: F=.79 f=.19 D: F=.40 f=.10

51 Given these allele frequencies, what would we expect the genotype counts to be in a randomly-mating population? FFFfff A: B:64324 C: D:

52 Given these allele frequencies, what would we expect the genotype counts to be in a randomly-mating population? FFFfff A: B:64324 C: D:


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