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A female quinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur In a litter of eight offspring there would probably be?
Wiki User
∙ 14y ago
To answer this, first determine the genotypes of the parents. The female is homozygous dominant, which means it carries two copies of the black allele (which we will designate B), so its genotype we can represent as BB. The male is homozygous for the recessive trait (white, designated as b), so its genotype can be represented as bb. So the cross looks like this: BB X bb Next, we must determine the types of gametes each parent can produce. In this case it's easy, because both are homozygous. The female can only produce B gametes, while the male can only produce b gametes. Since the offspring carry one allele from each parent, all of the offspring can have only one genotype: Bb. Since black (B) is the dominant allele, and every offspring carries the dominant allele, all eight of the offspring from this cross will be black.
Wiki User
∙ 14y ago
Wiki User
∙ 13y ago4 black and 4 white
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If the male parent has the genotype AAA and the female parent has the genotype AAA offsprings genotype will be?
The offspring's genotype will be AA. Both parents are homozygous dominant, AA, having only dominant alleles to pass on to their offspring. So each parent can pass on only the dominant allele (A) to its offspring. So the offspring will also be homozygous dominant, AA.
How many dominant alleles are required in a genotype to show the dominant phenotype?
If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait) If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait)
What does it mean if a plant is true breeding?
Mendel started out with plants that "bred true". That is, when tall plants were self-pollinated (or cross-pollinated with others like them), plants in following generations were all tall; when the short plants were self-pollinated (or cross- pollinated with others like them) the plants in following generations were all short.
F2 offspring are?
They are result of a cross among F 1 .
What is the chances of a person passing coffin lowry syndrome to there offspring?
Coffin-Lowry syndrome is an x-linked dominant condition which means it can only be passed on by a female. There are no known instances of a man passing CLS on to offspring. If the mother has CLS or is a CLS carrier, then there is a 50/50 chance of passing on the condition to her offspring. CLS can also occur as a spontaneous mutation, where there is no family history of the condition.
If the male parent has the genotype AAA and the female parent has the genotype AAA offsprings genotype will be?
The offspring's genotype will be AA. Both parents are homozygous dominant, AA, having only dominant alleles to pass on to their offspring. So each parent can pass on only the dominant allele (A) to its offspring. So the offspring will also be homozygous dominant, AA.
Which gender can have white eyes if the female parent is homozygous dominant for red eyes and the male parent has white eyes?
Male
Which gender can have white eyes if the female parent is homozygous dominant for red eyes and if the male parent has white eyes?
Male
What is the approximate probably that human offspring will be female?
50 percent
Why can the father not be homozygous for a dominant trait?
Homozygousity is defined as having the two alleles that are the same for a certain locus. For example, AA or AA are both homozygous. Dominance, however, is a different concept and it is independent of homozygousity. In addition, both dominance and homozygousity are independent of the sex of the individual (unless the trait is X-linked) Therefore, the three possibilities of homozygous dominant, heterozygous, and homozygous recessive for a trait are available for a male just as a female individual.
How many dominant alleles are required in a genotype to show the dominant phenotype?
If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait) If the allele is dominant, you only need one copy for it to be expressed in the phenotype (you have TWO alleles for each trait)
What does it mean if a plant is true breeding?
Mendel started out with plants that "bred true". That is, when tall plants were self-pollinated (or cross-pollinated with others like them), plants in following generations were all tall; when the short plants were self-pollinated (or cross- pollinated with others like them) the plants in following generations were all short.
What is the genotype of a white mouse?
The probable genotype for the white mouse would be homozygous recessive.
If a heterozygous red eyed female fruit fly mates with a heterozygous red eyed male fruit fly the ratio of the resulting offspring that will have red eyes is while the remaining r?
If red eyes are dominant, then 75% will have red eyes and 25% will have white eyes. The genetic breakdown is: 25% will be RR (homozygous red eyes), 50% will be Rr (heterozygous red eyes) and 25% will be rr (homozygous white eyes).
What is the stronger of two genes said to be?
Male and female genes combine to determine different traits of the offspring. The dominant gene is another term for the stronger gene.
F2 offspring are?
They are result of a cross among F 1 .
What would The combination for female offspring be?
The combination of a female offspring would be XX
