A sex-linked dominant gene, barred (feather pattern) can be used to sex newly hatched chicks. If a barred hen is mated to non-barred rooster, what are the phenotypes of the males and female chicks?
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A sex-linked dominant gene, barred (feather pattern) can be used to sex newly hatched chicks. If a
barred hen is mated to non-barred rooster, what are the
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- What is sex linkage? In mammals, which sex would be mostlikely to show recessive sex-linked traits?In cats, black coat color is dominant over gray. A female black cat whose mother is gray mates with a gray male. If this female has a litter of six kittens, what is the probability that three will be black and three will be gray?In pea plants, purple flower color is dominant to white flower color. If a homozygous dominant flower mates with a white flower, what is the chance of having white-flowered offspring?
- In humans, free earlobes are a dominant characteristic over attached earlobes. A person who has homozygous free earlobes marries someone who has attached earlobes. What percentage of the offspring exhibit the dominant trait, free earlobes?As we have seen,having scurs is an example of a sex-influenced trait in cattle that isdominant in males and recessive in females. A male and a female,neither of which has scurs, produce a male offspring with scurs.What are the genotypes of the parents?In fruit flies, red-eyes are dominant to white-eyes. In addition, eye color is a sex-linked trait. A red-eyed male Drosophila mates with a red-eyed female Drosophila. One of the female's parents had white eyes. What proportion of the male offspring will have white eyes? Check if my answer is correct
- In some animal species, being tall is dominant over being short. If a homozygous dominant individual mates with a short individual, what is the chance that their offspring will be heterozygous?In rabbits, the gene that codes for a spotted coat is dominant over the gene that codes for a solid coat, and the gene for the coat's black color is dominant over the gene for the coat's brown color. If a spotted, black-coated rabbit mates with a solid, brown-coated rabbit, what are the genotypes and phenotypes of their offspring?In humans, free earlobes are a dominant characteristic over attached earlobes. A person who has homozygous free earlobes marries someone who has attached earlobes. What percentage of the offspring have the homozygous dominant genotype, FF?
- Sex determination is different in birds and mammals. Describe how this difference in sex determination leads to a different probability of inheriting a sex-linked trait in male and female mammals versus birds.A black cat mates with a white cat. They produce 4 black offspring and two white offspring. What is the genotype of the parent cat?A heterozygous free-lobed man is mated to a heterozygous free-lobed woman. What are the genotypes and phenotypes of their possible offspring?