Assume That X Is a New Mutant Allele in Corn

question 35

Essay

Assume that x is a new mutant allele in corn.An x/x plant is crossed with a triple-10 individual (trisomic for chromosome 10)carrying only normal dominant alleles at the x locus.Trisomic progeny for chromosome 10 are recovered and crossed back to x/x.
a)What ratio of dominant to recessive phenotypes is expected if the x locus is not in chromosome 10?
b)What ratio of dominant to recessive phenotypes is expected if the x locus is in chromosome 10?

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Definitions:

Avoidant Personality

A personality disorder characterized by extreme sensitivity to rejection, social inhibition, and a feeling of inadequacy, leading to significant avoidance behavior.

Antisocial Personality

A mental disorder characterized by a long-term pattern of disregard for, or violation of, the rights of others.

Oppositional Defiant Disorder

A behavioral disorder characterized by a consistent pattern of angry or irritable mood, argumentative/defiant behavior, and vindictiveness, especially noticeable in children and adolescents.

Conduct Disorder

A pattern of repetitive behavior where the rights of others or social norms are violated.