The species Canis lupus, dog, has 78 chromosomes in a somatic skin cell. Which is true of a female dog’s egg cells?
Yellow color is dominant to green color in pea plants. A pea plant with the alleles Yy is which of the following?
In fruit flies, the gene for curved wing (c) and the gene for spineless bristle (s) are on different chromosomes. The respective wild type alleles for each of these genes produce normal wings and normal bristles. From the cross CcSS x ccSs, what fraction of offspring will have the genotype CcSs?
Which is true of sex chromosome contributions from parents to offspring?
Offspring ________ certain genetically determined characteristics called _________ from their parents.
inherit; traits
choose; genotypes
fertilize; genes
receive: meiosis
In mice color coat, brown (B) is dominant to white (b). In a lab setting, you are breeding a male with brown coat and a female with white coat. Of their 5 offspring, 2 baby mice have white coats and 3 have brown coats. What are the genotypes of mom and dad?
In mice color coat, brown (B) is dominant to white (b). If you cross two mice with the genotype Bb and the genotype Bb, what will be the predicted phenotype 1 out of every 4 times.
Melanoma, a form of skin cancer, can be caused by mutations acquired from exposure to UV radiation from the sun. This environmental factor is not the only cause of melanoma. Much less common is inherited melanoma, where a mutant allele is passed on from parent to offspring that puts them at a high risk of developing melanoma. Which statement correctly explains the difference between these two types of mutations?
In chickens the alleles for color are black (B) and white (W) feathers. The heterozygous genotype results in a gray colored phenotype. If a black chicken is crossed with a white chicken, what are the chances of their offspring being gray?
In the previous question the inheritance of color in chickens is an example of what type of dominance?