Genetics and heredity MCQ — 2 Practice Questions with Answers

Explanation

A back cross is made when an F1 hybrid is crossed with either of its parents. A test cross is specifically a cross with the homozygous recessive parent to determine genotype, so it is a narrower case. A reciprocal cross reverses the sexes of the parents in a pair of crosses. A dihybrid cross studies inheritance of two characters together. Since the stem says the F1 generation is crossed with any one parent, the correct term is back cross.

Explanation

In the terminology used by the question, eugenics is the branch linked with the proposed improvement of human hereditary qualities and it draws on heredity principles associated with Mendel's laws. Anthropology studies human beings, societies and cultures more broadly. Microbiology studies microorganisms, not human inheritance. Genetics is the core science of heredity itself; eugenics is the applied and historically controversial field framed around human hereditary improvement, so the printed key points to eugenics.