If one human parent is heterozygous for blood type A (IAi), and the second parent is heterozygous for blood type B (IBi), what are the expected phenotypic ratios in their children? a. 1/4 with blood type AB, 1/4 with blood type A, 1/4 with blood type B, and 1/4 with blood type O b. 1/4 with blood type A (IAi), 1/2 with blood type AB (IAIB), and 1/4 with blood type B (IBi) c. 1/2 with blood type AB (IAIB), and 1/2 with blood type O (ii) d. 1/2 with blood type A (IAi), and 1/2 with blood type B (IBi) e. 1/2 with blood type A (IAi), and 1/2 with blood type O (ii)

A1) The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and is heterozygous for hitchhikers thumb. What fraction of this couples children should have a widow's peak and a hitchhiker's thumb? 3/8 1/4 1/2 3/4 0 A2)The allele for widows peak (H) is dominant for the allele for no widows peak (h). At a different gene locus, the allele for hitchhikers thumb (D) is dominant to the allele for non-hitchhikers thumb (d). A man is heterozygoous for the traits and marries a woman who has no widows peak and has no hitchhikers thumb. What fraction of this couple's children should have no widow's peak and a hitchhiker's thumb? 3/8 0 1/4 1/2 1/8

a)1 The allele for tall pea plants is dominant over the allele for short pea plants. If two heterozygous plants are crossed, what will the genotypic and phenotypic ratios be? b)2 Purple flowers are dominant over white flowers, and green pods are dominant over yellow pods in pea plants. What would the probability be of producing a pea plant with white flowers and yellow pods from parent plants that are heterozygous for each trait? c)3 Red eyes are dominant on fruit flies but an x-linked recessive allele will produce white-eyed flies. If a pure breeding red-eyed female mates with a white-eyed male, what is the probability of white eyes in the F1 generation?

using a Punnett square, what will the offspring look like when the parents are Bb and Bb. B = dominant black hair and b = recessive blue hair. So what percentage of the offspring will have black hair vs blue hair?

In domestic chickens, feather color is inherited as an incompletely dominant trait.  Feather color is inherited as:  BB= Black          Bb= Speckled              bb= White What are the predicted phenotypes and their frequencies for each of the following crosses?  A. BB rooster x white hen         Black         ___________                 Speckled ___________ White       ___________   B. Speckled rooster x speckled hen         Black         ___________  Speckled ___________ White       ___________     C. Speckled rooster x white hen         Black         ___________  Speckled ___________ White       ___________

Achondroplasia is a hereditary condition caused by a dominant allele in humans (dominant allele A). This disorder affects bone growth specifically in long bones of the upper and lower limbs by preventing the ossification of bones from cartilage. Determine the genotypes of the parents and offspring for the following family scenarios in a and b below.  Two parents who have the Achondroplasia phenotype have 4 children where 1 is normal NOTE: You must draw a Punnet square to determine the possible genotypes of te children. When two alternative genotypes are possible for an individual, indicate both.

A cross is performed between individuals with the following genotypes: Aabb and aaBb. Use a Punnett square and predicted probabilities to answer the following questions. A. What is the probability that an offspring is dominant for the first trait and recessive for the second?  B. What is the probability that an offspring is dominant for both traits?  C. What is the probability that two offspring are dominant for both traits?

Joanne has AB blood and Henry has AB blood. They have one child with A blood, one child with AB blood, and another child that has O Bombay phenotype blood. Please explain what is happening here. What is the chance that Joanne and Henry will have a child with B blood type? What is the name of the phenomenon that is responsible for the Bombay phenotype?

Duchenne muscular dystrophy is an inheritable disorder that results in muscle weakness, leading to walking and breathing difficulties and heart disease. Which of the following is a valid conclusion about the Duchenne muscular dystrophy pedigree shown above? Select one: a. Only individuals I-2 and II-4 are confirmed carriers of the Duchenne muscular dystrophy allele. b. Individual II-3 can only pass on the Duchenne muscular dystrophy allele to individuals III-2 and III-4. c. Without further evidence, the genotypes of individuals II-2 and III-2 cannot be determined. d. Only individuals I-1 and II-3 are confirmed carriers of the Duchenne muscular dystrophy allele.

Duchenne muscular dystrophy is an inheritable disorder that results in muscle weakness, leading to walking and breathing difficulties and heart disease. Which of the following is a valid conclusion about the Duchenne muscular dystrophy pedigree shown above? a. Without further evidence, the genotypes of individuals II-2 and III-2 cannot be determined. b. Only individuals I-1 and II-3 are confirmed carriers of the Duchenne muscular dystrophy allele.