1) Can males be carriers of sex-linked traits? a) Yes, they have 1 X chromosome b) No, they have 2 X chromosomes c) Yes, they only have 1 Y chromosome d) No, they only have 1 X chromosome 2) What do you call the 'markers' of the blood? a) antigens b) antibodies c) blood type d) codominant 3) What antigen is present in blood type O? a) A b) B c) A and B d) None 4) Dwight has type AB blood while Cher has type O blood. Can Dwight receive Cher's blood? a) Yes, AB has antigens A and B b) No, AB has antibodies A and B c) No, O has antigens A and B d) Yes, O has antigens for A and B 5) What are the chances of parents with both AB blood types to sire an offspring with type O blood? a) 100% b) 75% c) 50% d) 25% e) 0% 6) Snapdragons are incompletely dominant. If red snapdragons are crossed with white snapdragons, what are the chances of the F1 generation having spotted red and white flowers? a) 100% b) 75% c) 50% d) 25% e) 0% 7) Ricky's mother has Type A blood while his father has Type B blood but Ricky has Type O blood. Is he adopted? If not, what are the chances of Ricky being a biological child of his parents? a) yes b) No, 4 out of 4 c) No, 2 out of 4 d) No, 3 out of 4 e) No, 1 out of 4 8) In plants known as “four o’clocks”, the allele for the dominant red flower colour is designated as ‘F’ and is incompletely dominant over the allele for white flowers ‘f’. If a horticulturist allows several pink four o'clocks to self pollinate, how many flowers will have pink flowers out of 200? a) 200 b) 150 c) 100 d) 50 e) 0 9) When white-coated cattle (W) are mated with red-coated cattle (R), the offspring are roan (WR), meaning their coats contain both white and red hairs. This is an example of codominance. A farmer breeds two roan cattle with one another. A farmer breeds two roan cattle with one another. What is the chance that their offspring will be red? a) 100% b) 75% c) 50% d) 25% e) 0% 10) A black sheep is bred with a white sheep. All of their offspring have a phenotype of gray coats. What is the most likely pattern of inheritance for coat color in sheep? a) sex-linked b) incomplete dominance c) multiple alleles d) codominance 11) In humans, three alleles affect blood type. The A and B alleles are codominant and the O allele is recessive. Which of the following answer choices is true? a) Human blood type is an example of incomplete dominance. b) Human blood type is an example of multiple allele inheritance. c) The O blood type is least common in the human population. d) The A and B alleles are codominant because both alleles are simultaneously expressed in the heterozygote. 12) A gene for corn has two alleles, one for yellow kernels and one for white kernels. A farmer mates yellow and white corn. All of the offspring have a nearly even mix of yellow and white kernels. Which type of inheritance most likely explains the relationship between the two alleles? a) Polygenic inheritance b) multiple alleles c) sex-linked trait d) codominance e) incomplete dominance 13) A woman who has hemophilia marries a normal man. How many of their children will have hemophilia? a) 4 b) 3 c) 2 d) 1 e) 0 14) In camellia flowers, petal color is controlled by codominance. When a red flower is crossed with a white flower, all of the offspring are covered in both red and white petals. A scientist crosses a red flower (RR) with a red-and-white (RW) flower. What are the predicted phenotypes of their offspring? a) 75% of the offspring will be red, and 25% of the offspring will be white. b) All of the offspring will have red petals. c) 50% of the offspring will be red, and 50% of the offspring will be red-and-white. d) All of the offspring will have red-and-white petals.

Non-Mendelian Inheritance

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