2. Mendel's Laws of Inheritance
Sex-Linked Genes
Problem 24b
Textbook Question
Textbook QuestionIn a species of fish, a black spot on the dorsal fin is observed in males and females. A fish breeder carries out a pair of reciprocal crosses and observes the following results.
Cross I Parents: black-spot male x nonspotted female
Progeny: 22 black-spot male
24 black-spot females
25 nonspotted males
21 nonspotted females
Cross II Parents: nonspotted male x black-spot female
Progeny: 45 black-spot males
53 nonspotted females
Why does this evidence support the hypothesis that a black spot is sex linked?
![](/channels/images/assetPage/verifiedSolution.png)
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
137
views
Was this helpful?
Related Videos
Related Practice