10) Classical albinism results from a recessive allele. What is the expected ratio for the progeny when a fully pigmented male with an albino father has children with a fully pigmented female with no history of albinism in her family? ? ¾ pigmented, ¼ albino ? ¾ albino, ¼ pigmented ? ½ pigmented, ½ albino ? all pigmented ? all albino Note: Clicking any button other than the Save Answer button will NOT save any changes to your answers! SAVE ANSWER SKIP QUESTION I AM FINISHED/SUBMIT FOR GRADE
Added by Joseph W.
Close
Step 1
The fully pigmented male must be heterozygous for albinism (Aa), as he is fully pigmented but has an albino father. The fully pigmented female has no history of albinism in her family, so she is most likely homozygous dominant for pigmentation (AA). Show more…
Show all steps
Your feedback will help us improve your experience
Shaiju T and 73 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Use the following information to answer the question below. Albinism (lack of skin pigmentation) is caused by a recessive autosomal allele. A man and woman, both normally pigmented, have an albino child together. 46. For this trait, what is the genotype of the albino child? A) homozygous dominant B) homozygous recessive C) heterozygous D) hemizygous E) unknown, because not enough information is provided 47. The couple decides to have a second child. What is the probability that this child will be albino? A) 0 B) 1/4 C) 1/2 D) 3/4 E) 1 48. The mother is now pregnant for a third time, and her doctor tells her she is carrying fraternal twins. What is the probability that both children will have normal pigmentation? A) 1/4 B) 3/4 C) 1/16 D) 9/16 E) 16/16 49. A 9:3:3:1 phenotypic ratio is characteristic of the A) F1 generation of a monohybrid cross. B) F2 generation of a monohybrid cross. C) F1 generation of a dihybrid cross. D) F2 generation of a dihybrid cross. E) F2 generation of a trihybrid cross. 50. A 1:2:1 phenotypic ratio in the F2 generation of a monohybrid cross is a sign of A) complete dominance. B) multiple alleles. C) incomplete dominance. D) polygenic inheritance. E) pleiotropy.
Shaiju T.
Albinism is an autosomal recessive trait. What is the expected ratio of progeny when a normally pigmented male, whose father was albino, marries an albino woman?
Marlyn J.
Albinism, the total lack of pigment, is due to a recessive gene. A man and woman plan to marry and wish to know the probability of their having any albino children. What are the probabilities if: a) both are normally pigmented, but each has one albino parent. b) the man is an albino, the girl is normal, but her father is an albino.
Bryan V.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD