Consider the Following Genetic Study Involving Two Autosomal Genes

question 64

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. Presuming no linkage between the genes, 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

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Definitions:

Collective Unconscious

The collective unconscious refers to a part of the unconscious mind which is derived from ancestral memory and experience and is common to all humankind, as opposed to the individual's unconscious.

Archetypal Themes

Universal, symbolic patterns that recur in myths, stories, and dreams, signifying common human experiences.

Ego Identity

Erikson's concept of a strong sense of self achieved through the resolution of crises at various developmental stages.

Diverse Clients

Refers to a broad spectrum of clients from different backgrounds, cultures, ethnicities, and personal experiences in a therapeutic setting.