When Mating Two Heterozygotes for Alleles in Which One Is

question 17

Multiple Choice

When mating two heterozygotes for alleles in which one is dominant to the other, if the usual Mendelian segregation process is occurring, the ratio of the offspring phenotypes produced should be 3:1. The dominant phenotype would be more common than the recessive one. Imagine a situation in which two heterozygotes are mated and among their 200 offspring, 160 show the dominant phenotype while 40 show the recessive phenotype. What is the conclusion of a two-sided binomial test using the normal distribution to approximate the binomial?

• A) Fail to reject null hypothesis, we lack evidence that anything other than usual Mendelian segregation is occurring.
• B) Fail to reject null hypothesis, we have evidence that something other than usual Mendelian segregation is occurring.
• C) Reject null hypothesis, we lack evidence that anything other than usual Mendelian segregation is occurring.
• D) Reject null hypothesis, we have evidence that something other than usual Mendelian segregation is occurring.

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Definitions:

Reciprocity

A social rule where if someone gives you something, you feel an obligation to give something back.

Propinquity

Refers to the physical or psychological proximity between people that often leads to friendship or other relationships.

Just-world Hypothesis

The belief in a fair world where individuals get what they deserve, serving as a way to rationalize inequality and misfortune.

Reciprocity Model

A social psychology concept that suggests individuals are more likely to help others who have helped them in the past.