Consider the Following Genetic Study Involving Two Autosomal Genes

question 21

Multiple Choice

Consider the following genetic study involving two autosomal genes. One of these, eye colour, has the dominant allele (R) for red eye colour and the recessive allele (r) for yellow eye colour. The other has the dominant allele (T) leading to paws with thumbs, while the recessive allele (t) codes for paws without thumbs. If these genes are not linked, what should be the phenotype ratio of the offspring produced by a testcross (RrTt × rrtt) ?

• A) 1 red-eyed with thumbs : 1 yellow-eyed without thumbs
• B) 1 red-eyed with thumbs : 1 yellow-eyed with thumbs : 1 red-eyed without thumbs : 1 yellow-eyed without thumbs
• C) 3 red-eyed with thumbs : 1 yellow-eyed without thumbs
• D) 9 red-eyed with thumbs : 3 yellow-eyed with thumbs : 3 red-eyed without thumbs : 1 yellow-eyed without thumbs

---

Definitions:

From Openness

A principle or practice of being transparent, sharing information freely, and fostering an inclusive environment in business or community activities.

Abstract to Concrete

describes the process of taking theoretical ideas or concepts and translating them into actionable, tangible outcomes or products.

Divergent Thinking

A thought process or method used to generate creative ideas by exploring many possible solutions.

Brainstorm

A creativity technique designed to generate a large number of ideas for the solution of a problem.