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If present of horn in a breed of sheep is due to the presence of h+ allele which is sex influenced and more expressed in male, choose the off one out.

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If present of horn in a breed of sheep is due to the presence of h+ allele which is sex influenced and more expressed in male, choose the off one out.

(a) Female with h^+ h^+

(b) Male with h^+ h^+

(c) Female with h h^+

(d) Male with h h^+

I got this question at a job interview.

Query is from Sex Influenced Traits and Sex Limited Traits topic in division Chromosomes and Sex Determination of Cytogenetics

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The correct option is (c) Female with h h^+

Easy explanation: This sex influenced trait is dominant for male and recessive for female. Out of the given options only heterozygous female will not express this trait making it the off one.

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