Genetics Basics
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Q. If a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt), what is the probability of obtaining a tall plant?
Q. If a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt), what is the probability of obtaining a short plant?
Q. If a pea plant with genotype Rr (round seeds) is crossed with another pea plant with genotype rr (wrinkled seeds), what is the probability of obtaining a round-seeded plant?
Q. If a plant with genotype Aa is crossed with a plant with genotype aa, what is the expected genotypic ratio of the offspring?
Q. If a plant with genotype Aa is crossed with a plant with genotype aa, what is the expected phenotypic ratio of the offspring?
Q. If a plant with genotype Aa is crossed with another plant of genotype Aa, what is the probability of obtaining a homozygous dominant offspring?
Q. If a plant with genotype AaBb is crossed with another plant of genotype Aabb, what is the probability of obtaining an offspring with genotype Aabb?
Q. If a plant with genotype Bb is crossed with a plant with genotype bb, what is the expected phenotypic ratio of the offspring?
Q. If a plant with genotype Tt is crossed with a plant of genotype tt, what fraction of the offspring will be tall?
Q. If a purebred red flower (RR) is crossed with a purebred white flower (rr), what will be the color of the flowers in the F1 generation?
Q. If a purebred red flowered plant (RR) is crossed with a purebred white flowered plant (rr), what will be the phenotype of the F1 generation?
Q. If a trait is controlled by a single gene with two alleles, where A is dominant over a, what is the expected phenotypic ratio in the offspring of a cross between Aa and aa?
Q. If a trait is sex-linked and recessive, what is the probability that a son will express the trait if his mother is a carrier and his father does not have the trait?
Q. If a woman with blood type A (genotype AO) has a child with a man with blood type B (genotype BO), what are the possible blood types of their child?
Q. In a certain plant species, tall (T) is dominant over short (t). If a homozygous tall plant is crossed with a homozygous short plant, what will be the genotype of the offspring?
Q. In a certain species of fruit flies, the allele for red eyes (R) is dominant over the allele for white eyes (r). If two red-eyed flies, one homozygous (RR) and one heterozygous (Rr), are crossed, what percentage of the offspring will have white eyes?
Q. In a certain species of pea plants, round seeds (R) are dominant over wrinkled seeds (r). If a round seed plant with genotype Rr is crossed with a wrinkled seed plant (rr), what is the expected genotype ratio of the offspring?
Q. In a certain species, the allele for blue eyes (b) is recessive to the allele for brown eyes (B). If a brown-eyed man (Bb) marries a blue-eyed woman (bb), what is the probability that their child will have blue eyes?
Q. In a certain species, the allele for blue eyes (b) is recessive to the allele for brown eyes (B). If two heterozygous brown-eyed individuals (Bb) have children, what is the probability that a child will have blue eyes?
Q. In a certain species, the allele for blue flowers (B) is dominant over the allele for white flowers (b). If two blue-flowered plants, one homozygous (BB) and one heterozygous (Bb), are crossed, what percentage of the offspring will have white flowers?
Q. In a certain species, the allele for blue flowers (B) is dominant over the allele for white flowers (b). If two blue-flowered plants, both heterozygous (Bb), are crossed, what is the expected phenotypic ratio of the offspring?
Q. In a certain species, the allele for long tails (L) is dominant over the allele for short tails (l). If a long-tailed individual is crossed with a short-tailed individual, what is the expected genotype of the offspring if the long-tailed individual is heterozygous?
Q. In a certain species, the allele for tall plants (T) is dominant over the allele for short plants (t). If two heterozygous tall plants (Tt) are crossed, what is the expected phenotypic ratio of the offspring?
Q. In a certain species, the allele for tall plants (T) is dominant over the allele for short plants (t). If a tall plant (Tt) is crossed with a short plant (tt), what is the expected genotypic ratio of the offspring?
Q. In a dihybrid cross between two heterozygous parents (AaBb x AaBb), what fraction of the offspring will be homozygous recessive for both traits?
Q. In a dihybrid cross between two pea plants, one with genotype AaBb and the other with genotype Aabb, what fraction of the offspring will be homozygous recessive for both traits?
Q. In a dihybrid cross between two plants, one with genotype AaBb and the other with genotype Aabb, what fraction of the offspring will be expected to show the dominant phenotype for both traits?
Q. In a genetic cross, if the phenotypic ratio of the offspring is 9:3:3:1, what type of inheritance is being observed?
Q. In a genetic cross, if the phenotypic ratio of the offspring is 9:3:3:1, what type of cross was performed?
Q. In a genetic cross, if the ratio of phenotypes in the offspring is 9:3:3:1, what type of cross was performed?
