The Pattern of Inheritance Can Be Predicted from Data If
The pattern of inheritance can be predicted from data if one is given the parent or offspring genotypes or phenotypes. Two organisms, with genotypes BbDD and BBDd, are mated. Assuming independent assortment of the B/b and D/d genes, determine the genotypic ratios in offspring that would occur.
A) 1/2 BBDD, 1/2 bbdd
B) 1/4 BBDD, 1/4 BbDD, 1/4 BBDd, 1/4 BbDd
C) 9/16 BBDD, 3/16 BbDD, 3/16 BBDd, 1/16 bbdd
D) 1/4 BBDD, 1/2 BbDd, 1/4 bbdd
The following question refers to the pedigree chart in the figure for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle. What is the probability that individual III-1 is Ww?
The figure shows the pedigree for a family. Dark-shaded symbols represent individuals with one of the two major types of colon cancer. Numbers under the symbols are the individual's age at the time of diagnosis. Males are represented by squares, females by circles. From this pedigree, this trait seems to be inherited ________.
A) from mothers
B) as an autosomal recessive
C) as a result of epistasis
D) as an autosomal dominant
Which of the following statements is a correct explanation for the observation that all offspring exhibit a phenotype for a particular trait that appears to be a blend of the two parental varieties?
A) Neither of the parental genes is dominant over the other.
B) The genes for the trait are dominant in both of the parents.
C) The genes are linked and do not separate during meiosis.
D) The genes for the trait are recessive in both of the parents.