In mice, short hair is dominant over long hair. If a heterozygous shorthaired male is crossed with a heterozygous female, what are the genotypes of the parents?
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In mice, short hair is dominant over long hair. If a heterozygous shorthaired male is crossed with a heterozygous female, what are the genotypes of the parents?
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- In cabbage butterflies, White wings are dominant to yellow wings. If a heterozygous white-winged butterfly is crossed with a yellow-winged butterfly, what are the possible genotypes and phenotypes of the offspring and the percent chance for each?In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell (calico) coat. If a long-haired yellow male is crossed with a tortoiseshell female homozygous for short hair, what are the expected phenotypic results?In guinea pigs, the gene for black coat color is dominant to the gene for white coat color. What will be the genotypic ratio for the cross between two heterozygous parents?
- What is the result of crossing a black male cat (Nn) and a black female cat (Nn)?In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes orange color. The heterozygote is tortoiseshell. What kinds of offspring would you expect from the cross ofan orange female and a black male? A) black females; orange malesB) tortoiseshell females; black malesC) tortoiseshell females; tortoiseshell males D) tortoiseshell females; orange males E) orange females; black malesA particular walnut rooster was crossed to a pea hen, and the progeny consisted of 12 walnut, 11 pea, 3 rose, and 4 single chickens. What are the likely genotypes of the parents?
- In mice, the allele C for colored fur is dominant over the allele c for white fur, and the allele V for normal behavior is dominant over the allele v for waltzing behavior, a form of discoordination. Give the genotypes of the parents in each of the following crosses: (a) Colored, normal mice mated with white, normal mice produced 29 colored, normal and 10 colored, waltzing progeny. (b) Colored, normal mice mated with colored, normal mice produced 38 colored, normal, 15 colored, waltzing, 11 white, normal, and 4 white, waltzing progeny. (c) Colored, normal mice mated with white, waltzing mice produced 8 colored, normal, 7 colored, waltzing, 9 white, normal, and 6 white, waltzing progeny.Two gray mice with unknown ancestry are crossed. Can you determine from the phenotype of their offspring if the parents are homozygous or heterozygous? Explain how?In guinea pigs, rough coat (R) is dominant to smooth coat (r). If a homozygous rough-coated animal is crossed with a smooth-coated one: What will be the phenotype(s) of the F1 generation? What will be the phenotype(s) of the F2 generation? What will be the phenotype(s) of the offspring resulting from a cross of an F1 individual back to its rough parent? What will be the phenotype(s) of the offspring of a cross of an F1 individual back to its smooth parent?
- In a species of bird, feather colour is determined by a single, non-autosomal gene that shows complete penetration. A red-feathered female mates with a blue-feathered male, and all the F1 males are blue-feathered and the F1 females are red-feathered. When the F1 individuals are crossed, all the F2 males are again blue-feathered and the F1 females are again red- feathered. Provide the genotype of the F2 males and females. Clearly indicate which genotype is associated with males and females, respectively. Binomial Expansion 1 a+b 2 a' + 2ab + b? 3 a'+ 3a'b + 3ab + b a + 4a'b + 6a'b + 4ab + b 5 a + Sa*b + 10a'b2 + 100'b + Sab + bIn peas, purple flowers are dominant to white. If a purple flowered, heterozygous plant were crossed with a white flowered plant, what is the expected ratio of genotypes in the offspring?A wild-type male and a wild-type female Drosophila with red eyes and full wings are crossed. Their progeny are shown below: Males Females 3/8 Full wing, Red eye ¾ Full wing, Red eye 3/8 Miniature wing, Red eye ¼ Full wing, Purple eye 1/8 Full wing, Purple eye 1/8 Miniature wing, Purple eye 1. What is/are the genotype(s) of females with purple eye? Of males with purple eye and miniature wing? Draw both out with appropriate symbols