Mendel and Heredity

The passing of traits from parents to offspring is called:

• Reproduction

• Heredity

• Development

• Maturation

The scientific study of heredity is called:

• Meiosis

• Crossing over

• Genetics

• Pollination

The “father” of genetics was:

• A. Knight

• Hans Krebs

• Gregor Mendel

• Charles Darwin

Garden peas are good subjects for studying heredity because they:

• Are easy to grow

• Produce many offspring

• Have contrasting traits

• All of these answers

An allele that is ALWAYS expressed whenever it is present is called:

• Recessive

• Phenotypic

• Superior

• Dominant

An allele that is NOT expressed in the presence of a dominant allele is said to be:

• Dominant

• Recessive

• Homozygous

• Heterozygous

The phenotype of an organism:

• Represents its two letter genetic composition

• Shows the physical appearance of a trait

• Occurs only in dominant individuals

• Cannot be seen

If an individual has two recessive alleles for the same trait, the individual is said to be:

• Mutated

• Haploid for the trait

• Homozygous for the trait

• Heterozygous for the trait

If an individual has one dominant and one recessive allele for the same trait, the individual is said to be:

• Mutated

• Haploid for the trait

• Homozygous for the trait

• Heterozygous for the trait

Refer to the illustration. Having freckles (F) is dominant to not having freckles (f). The child represented in box 1 in the Punnett square would:

• Have an extra freckles chromosome

• Be heterozygous for freckles

• Be homozygous for freckles

• Not have freckles