What Was the Most Significant Conclusion That Gregor Mendel Drew

question 29

Multiple Choice

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

• A)There is considerable genetic variation in garden peas.
• B)Traits are inherited in discrete units and are not the results of the "blending" of traits.
• C)Recessive genes occur more frequently in the F₁ generation than do dominant ones.
• D)An organism that is homozygous for many recessive traits is at a disadvantage.

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Definitions:

Genetic Equilibrium

The condition of a population that is not undergoing evolutionary change (i.e., in which allele and genotype frequencies do not change from one generation to the next). See Hardy–Weinberg Principle.

Allele Frequencies

The proportion of various alleles of a gene in a population, which can change over time due to evolutionary pressures, genetic drift, mutation, and gene flow.

MN Blood Type

A blood group system classifying human blood based on the presence or absence of the M and N antigens on the surface of red blood cells.

Genotype Frequency

The proportion of a particular genotype in the population. Compare with allele frequency and phenotype frequency.