In humans the brown eye allele is dominant to the blue eyes allele if two heterozygotes mate what will be the likely genotype and phenotype ratios of the offspring
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- Eye color is a heritable trait in ground squirrels. Green eyes (G) are dominant and yellow eyes (g) are recessive. You mate a heterozygous female with a homozygous recessive male. What is the genotypic ratio of their offspring? Group of answer choices 1 GG : 2 Gg : 1 gg. 2 GG : 1 Gg : 1 gg. 1 Gg : 3 gg. 2 Gg : 2 gg.In some cats, the gene for tail length shows incomplete dominance. Cats homozygous for the long tail allele (T) have long tails and cats homozygous for the short tail allele (t) have no tails. Heterozygous cats have short tails. Draw a Punnett square for a mating between a short tail cat and a cat with no tail. According to your Punnett square, what is the percent chance that they would have a kitten with no tail? A)0% B)25% C)50% D)75% E)100%The gene for flower color in snapdragons displays incomplete dominance. Snapdragons homozygous for the allele for red flower color have the genotype FRFR and have red flowers. Snapdragons homozygous for the allele for white flower color have the genotype FWFW and have white flowers. Heterozygous snapdragons, with the genotype FRFW, have pink flowers. A snapdragon that has pink flowers is crossed with a different snapdragon that has pink flowers. What percentage of the offspring is expected to have red, white, and pink flowers?
- In cats, white patches are caused by the dominant allele P while p/p individuals are solid colored. Short hair is caused by the dominant allele S, while s/s cats have long hair. A longhaired cat with patches whose mother was solid-colored and shorthaired mates with a shorthaired, solid-colored cat whose mother was longhaired and solid-colored. What kinds of kittens can arise from this mating and in what proportions? Outline the cross and assign genotypes, phenotypes, and proportions in the space below. Plong hair, white patchesxshort hair, solid colored s/s ; P/pS/s ; p/p F1 progeny: 1/4 s/s ; P/plong hair, white patches 1/4 s/s ; p/plong hair, solid colored 1/4 S/s ; P/pshort hair, white patches 1/4 S/s ; p/pshort hair, solid coloredIn cats, the locus for orange coat color is sex linked. Male cats that are black have the o+ allele, whereas those that are orange have the o allele. Females can be homozygous for the orange allele or homozygous for the black allele and will express each color, respectively. Heterozygous females are tortoise-shelled or calico, having orange and black patches. A calico cat, in addition to being heterozygous at the orange locus, also is either heterozygous or homozygous for the incompletely dominant, autosomal spotting allele (SS = large spots, Ss = small spots, ss = no spots). Manx tails are caused by a dominant trait that is lethal when homozygous. Long tails are the result of a homozygous recessive genotype. An orange male with small white spots and a manx tail is crossed to a calico female with small white spots and a manx tail. What is the probability of observing a solid black female with no spots and long tail? (Hint: All calico cats are female!)Black coat colour in cocker Spaniels is governed by a dominant allele B and red coat colour by its recessive allele b; solid pattern is governed by the dominant allele of an independently assorting locus S, and sported pattern by its recessive allele s. A solid black male is mated to a solid red female and produces a litter of six pups: two solid black, two solid red, one black and white, and one red and white. (a) What are the possible genotypes of all the phenotypes obtainable? (b) Determine genotype of the parents. Hint- an unknown portion of a genotype may be indicated by a dash (-).
- On average, when two people who are heterozygous for brown eyes mate, their children will be Group of answer choices all brown-eyed all blue-eyd 75% brown eyes, 25% blue eyes 25% brown eyes, 75% blue eyes 50% brown-eyed, 50% blue-eydIn fruit flies, the allele for long wings (L) is dominant to the allele for short wings (l). If a male that is heterozygous for wing length mates with a female that has short wings what are the possible genotypes and phenotypes of their offspring? Complete the Punnett square below. What is the expected phenotypic ratio among the offspring?In sheep, the presence and absence of horns is considered a sex influenced trait where the horned gene is dominant in rams but not in ewes. What will be the expected genotypes and phenotypes if heterozygous ram is bred to a heterozygous ewe? Addition: In the above mating (a,b,&c), it is assumed that one-half of the expected heterozygous offspring produced are females and the other half are males.
- Achondroplasia is the most common form of dwarfism in miniature horses. Achondroplasia dwarf horses have normal sized bodies and heads, but noticeably smaller upper legs and ears. This form of dwarfism is an autosomal dominant trait. The pedigree shows the offspring of one horse without dwarfism, Individual 1, and one with dwarfism, Individual 2. The horses with achondroplasia are shorter. 1 2Feather colour in parakeets is controlled by two genes. Blue colour (B) is dominant over absence of colour (b). Yellow colour (Y) is dominant over absence of colour (y). When a B allele and a Yallele are present, a green parakeet is produced. The probability of obtaining a female or male parakeet is the same as for humans. What is the probability of obtaining a male green parakeet when a green parakeet heterozygous for both genes is crossed with a white parakeet? Select one: a. 0.75 b. 0.25 c. 0.13 d. 0.50Hierarchy of Dominance Example: hair curling Sw = wooly Sc= curly Swa= wavy s = straight Sw> Sc> Swa> s w Hierarchy of Dominance Dad Colavito has wavy hair. Mom Colavito has curly hair. Their daughter Jean has straight hair. What are the expected genotypic and phenotypic ratios for their offspring? SW> Sc> Swa> S
