The development of scurs, small horn-like growths on the faces of cattle, is inherited with the sex-influenced alleles ScP𝑆𝑐𝑃and ScA𝑆𝑐𝐴. The allele ScP𝑆𝑐𝑃stands for scurs being present and is dominant in males and recessive in females. The allele ScA𝑆𝑐𝐴stands for scurs being absent and is dominant in females and recessive in males. Suppose a male with no scurs is mated to a female with scurs. What is the pattern expected for their offspring?Multiple choice question.None of the offspring will have scurs.None of the female offspring will have scurs but all of the male offspring will have scurs.All of the offspring, both male and female, will have scurs.None of the male offspring will have scurs but all of the female offspring will have scurs.
Question
The development of scurs, small horn-like growths on the faces of cattle, is inherited with the sex-influenced alleles ScP𝑆𝑐𝑃and ScA𝑆𝑐𝐴. The allele ScP𝑆𝑐𝑃stands for scurs being present and is dominant in males and recessive in females. The allele ScA𝑆𝑐𝐴stands for scurs being absent and is dominant in females and recessive in males. Suppose a male with no scurs is mated to a female with scurs. What is the pattern expected for their offspring?Multiple choice question.None of the offspring will have scurs.None of the female offspring will have scurs but all of the male offspring will have scurs.All of the offspring, both male and female, will have scurs.None of the male offspring will have scurs but all of the female offspring will have scurs.
Solution
The male with no scurs would have the genotype ScA ScA, as ScA is recessive in males and the male does not have scurs. The female with scurs would have the genotype ScP ScP, as ScP is recessive in females and the female has scurs.
When these two mate, all of their offspring will receive one ScA allele from the father and one ScP allele from the mother. Therefore, all of the offspring will have the genotype ScA ScP.
For the male offspring, the ScP allele is dominant, so they will have scurs. For the female offspring, the ScA allele is dominant, so they will not have scurs.
Therefore, the correct answer is: None of the female offspring will have scurs but all of the male offspring will have scurs.
Similar Questions
The development of scurs, small horn-like growths on the faces of cattle, is inherited with the sex-influenced alleles ScP𝑆𝑐𝑃and ScA𝑆𝑐𝐴. The allele ScP𝑆𝑐𝑃stands for scurs being present and is dominant in males and recessive in females. The allele ScA𝑆𝑐𝐴stands for scurs being absent and is dominant in females and recessive in males. Suppose a male with scurs is mated to a female with no scurs. All of the male offspring, as well as 50% of the female offspring, have scurs. What are the genotypes of the parents in this cross?Multiple choice question.ScPScP𝑆𝑐𝑃𝑆𝑐𝑃 male x ScAScA𝑆𝑐𝐴𝑆𝑐𝐴ScPScP𝑆𝑐𝑃𝑆𝑐𝑃 male x ScPScA𝑆𝑐𝑃𝑆𝑐𝐴 femaleScPScA𝑆𝑐𝑃𝑆𝑐𝐴 male x ScPScA𝑆𝑐𝑃𝑆𝑐𝐴 femaleScPScA𝑆𝑐𝑃𝑆𝑐𝐴 male x ScAScA𝑆𝑐𝐴𝑆𝑐𝐴 female
Offspring will receive both the alleles for a given trait from one parent.Group of answer choicesTrueFalse
Which of the following complex inheritance patterns are correctly matched to their description?Multiple select question.X-linked: Inactivation of one of the sex chromosomes in somatic cells of female mammals.Simple Mendelian: Pattern determined by a pair of alleles displaying a dominant/recessive relationship located on autosome.Epistasis: The alleles of one gene mask the effect of the alleles of another gene.Incomplete dominance: The silencing of an allele from one parent, and the expression of the same allele from the other parent.
Fertilization gives each new individual two alleles for each trait.Group of answer choicesTrueFalse
A blue horse and a yellow horse have a green offspring. This is an example of which type of inheritance? Group of answer choicesCo-dominanceIncomplete dominanceSex-linkedPolygenicMultiple alleles
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.