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- 1. An albino man whose parents are both normal marries a woman one whose parents is normal and the other albino. She has an albino sister. The couple has a normal son. a. Is albinism a dominant or a recessive trait? Explain your answer. b.Give genotypes of all the persons involved. c. The couple plans to have more kids. What is the probability of their second child being normal?Black fur is dominant over gray. If a father is heterozygous dominant and the mother is homozygous recessive, a1. what are the genotype probabilities of their offspring? a2. what are the phenotype probabilities of their offspring?1. A woman who is heterozygous for the brown eye and blue eye alleles marries a man with blue eyes. What are the genotypes and phenotypes of the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
- 1. If your genotype is Bb, what type of trait would you express as phenotype? a. dominant b. recessive c. both a and b d. neither a nor b 2. If your genotype is BB, what type of trait would you express as phenotype? a. dominant b. recessive c. both a and b d. neither a nor b 3. If a baby goat received a dominant gene for curly hair from one parent, and a recessive gene for straight hair from the other, which trait will the baby goat display? a. No hair b. Curly hair c. Straight hair d. Straight and curly hair 4. The allele for yellow seeds in pea plants, Y, is dominant. The allele for green seeds in pea plants, y, is recessive. Which combination would produce a plant with green seeds? a. YY b. Yy c. yY d. yy 5. In humans, the allele for brown eyes, B, is dominant over the allele for blue eyes, b. Which combination of alleles shown below could result in a…1. Hereditary deafness in dalmations (d) is a recessive trait. What percentage of the progeny of crossing DD × Dd will be expected to be a carrier of the deafness allele, but not deaf? (enter a number only) 2.In snapdragons, a flowering plant, red (R) flower colour is dominant to white (r). The heterozygous condition results in pink flower colour. If a two pink flowered snapdragons are crossed, what is the resulting phenotype ratio? Select one: a.2:2 b.1:1:1:1 c.1:2:1 d.3:1 e. (all will be the same)1. Hemophilia is a sex-linked genetic disease caused by a recessive allele. If a woman who was a carrier for hemophilia married a man who was healthy, what fraction of their children would be likely to have hemophilia? A. 1/4 B. 1/2 C. 0% chance their children would get it D. 3/4 2. In cats, black fur color is dominant over brown fur color. If a heterozygous black cat was crossed with a brown cat, what fraction of the kittens would be black? A. 50% B. 25% C. 75% D. 0%
- 1,Show the cross between two people with Type AB blood. What is the genotypic and phenotypic outcome of such a cross? 2. Incomplete dominance = If a Red (RR) and White flower (rr) were crossbred, resulting in 100% Rr, what phenotype(s) would been seen according to the rules of IN-complete dominance? 3. Two parents think their baby was switched at the hospital. Its 1968, so DNA fingerprinting technology does not exist yet. The mother has blood type “O,” the father has blood type “AB,” and the baby has blood type “B.” Mother’s genotype: _______ Father’s genotype: _______ Baby’s genotype: ______ or _______ Was the baby switched? ____________________________________________________Brown Enamel of the teeth is a well-known sex-linked dominant trait. Showing ALL work using punnett squares, determine the genotypes of offspring for the following matings: A.) The father of a family has a defect, but the mother does not and does not carry it. B.) The father has the defect, and the mother is heterozygous for it. C.) The father does not have the defect and the mother is homozygous for it. D.) The father does not have the defect and the mother is heterozygous.1. In rabbits, mono-colored fur (F) and straight ears (E) are dominant over spotted-fur and floppy ears. Your son owns a rabbit possessing white fur and floppy ears, and he mated it with another rabbit. The offspring of the rabbits turn out to be 8 in total. 4 are possessing white fur with straight ears, while the remaining 4 has spotted white and brown fur with straight ears. a. What are the traits (phenotype) present on the other rabbit mated to your son’s rabbit? Create a table to properly note the phenotypes and genotypes. Considering that your son continued breeding his rabbit to the original rabbit, what will be the probability that it will produce: b. male white fur with straight eared rabbit c. 2 male white fur with floppy eared rabbit d. 2 male white furred, straight eared rabbits and 4 female spotted white and brown, straight eared rabbits
- 1. If a man, dominant homozygote for tongue rolling, is expecting a child with a woman that is heterozygotic for the trait – what is the probability for their firstborn to be a daughter being dominant homozygotic for tongue rolling? 2. A color-blind female is expecting with a color seeing male – what is the probability of a male child to see color? 3. In Sweden 1/500 are born with an autosomal recessive disorder called thalassemia. What is the carrier frequency within the population?1. In guinea pigs, two different genes affect the coat. One gene codes for coat color and there are 2 codominant alleles C1=Brown and C2=White. The heterozygous form is tan colored. The second gene codes for presence of hair with H=hairy (dominant) and h=hairless (recessive). If we didn't know the genotypes of the parents, but mom is hairless and dad is tan haired, and the babies produced included brown, tan, white, and hairless, can you guess the genotypes of the parents? Show your work below (explain how you came up with the answers)3. A couple just had a baby, who has type-O blood. Upon learning the baby’s blood type, the father becomesinfuriated and accuses the mother of cheating on him. The mother has type-A blood and the father has type-Bblood. Knowing that the allele for type-O is recessive, answer the following questions.a. What is the relationship between the IA, IB, and i alleles?b. Is the father right? Or is he falsely accusing the mother? Explain. Include the genotypes of the parentsand the genotypes of their potential children.