SAT Subject Test in Biology › Inheritance Patterns
According to the law of independent assortment, what is the possible number of combinations that chromosomes can assort to independently in the gamete?
In mammals, which type of phenotypic expression will show recessive traits more frequently in males than females?
Your neighbor has a flower garden in which there are red flowers and white flowers. These flowers are diploid organisms, and flower color is an autosomal trait. The gene for red flowers (R) is dominant, while the gene for white flowers (r) is recessive.
Which of the following is the genotype of a white flower?
Each person can have one of four possible blood types: A, B, AB, or O. Blood type A means that the "A" antigen is present on the red blood cell surface. Blood type B means that the "B" antigen is present on red blood cells' surfaces. Blood type "AB" means that both the "A" antigen and the "B" antigen are present on the red blood cells' surfaces. Blood type "O" means that no antigens are present on the red blood cells' surfaces.
A mother with blood type A and the genotype "A/O" and a father with blood type B and genotype "B/B" have a child with blood type AB. This is an example of what type of inheritance pattern?
Your neighbor has a flower garden in which there are red flowers and white flowers. These flowers are diploid organisms, and flower color is an autosomal trait. The gene for red flowers (R) is dominant, while the gene for white flowers (r) is recessive.
Which of the following could be the genotype of a red flower?
What is the phenotypic ratio for a cross between a plant with blue flowers BB and a plant with white flowers bb?
A man expresses a certain X-linked recessive genetic disorder. Which of the following must be true?
I. His father passed on the allele for the disorder
II. His mother passed on the allele for the disorder
III. His mother expresses the disorder
What contributes to genetic variation during human reproduction?
For a certain species of flowers, blue petals (P) are dominant to white petals (p) and long stems (Q) are dominant to short stems (q). Flower 1 is the offspring of a purebred long-stemmed, blue flower (PPQQ) and a purebred short-stemmed, white flower (ppqq).
If Flower 1 is crossed with a short-stemmed, white flower, what fraction of its offspring will be white and short-stemmed?
In a certain flower, a blue petal phenotype is dominant to a white petal phenotype. If you cross a heterozygous flower with a homozygous recessive flower, what is the probability of inheritance for the white petal phenotype?