Register
In freshwater snails, pigment color is influenced by two genes. If two heterozygous pigmented freshwater snails were crossed and offspring were produced in a ratio of 9 pigmented snails to 7 albino snails,
79.1k views
3 votes
In freshwater snails, pigment color is influenced by two genes. If two heterozygous pigmented freshwater snails were crossed and offspring were produced in a ratio of 9 pigmented snails to 7 albino snails, what are the genotypes of the offspring?

User Steve Peak
by
5.6k points

1 Answer

4 votes

Answer:

The typical ratio of a dihybrid cross is 9:3:3:1 for the genotypes A_B_: aaB_: A_bb: aabb. Hence the ratio of 9:7 means the aaB_, A_bb and aabb all exhibit the same phenotype. So long as a gene is homozygous recessive at Gene A or Gene B, a recessive phenotype would be observed. Hence the genotypes of the offspring would be AABB, AaBB, AABb, aaBb, aaBB, AAbb, Aabb and aabb.

Step-by-step explanation:

User Balexand
by
6.3k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.7m questions

7.5m answers

Other Questions

Which of these structures is primarily responsible for the enzymatic breakdown of a large molecules in the cell?
What are some common signs and symptoms of mental health disorders?
Which statement BEST describes the relationship between adenosine diphosphate (ADP) and adenosine triphosphate (ATP)? A. With an input of energy, ADP rearranges to become ATP. B. Without any energy change,
A state of joyful activity in which the subject performs an action effortlessly and skillfully is known as a(n) __________.
!! Earth Science!! Carbon dioxide is normally approximately 2% fraction of the air in the atmosphere. The reason carbon dioxide is considered a pollutant is because... a) Carbon dioxide levels are much
Link Copied!