Mendel and the Gene

Question 1

What are true-breeding parents, hybrid offspring, and F1 offspring also known as?

Answer 1

Parental generation, F1 generation and F2 generation

Question 2

What Mendel called a “heritable factor” is what we now call

Answer 2

Gene

Question 3

What is the difference between homozygotes and heterozygotes?

Answer 3

Homozygotes are true-breeding, heterozygotes are not.

Question 4

What is the difference between phenotype and genotype?

Answer 4

Phenotype is how it appears and genotype is genetic

Question 5

What is the research method that can help us determine the genotype of an individual with a dominant phenotype? (since it could be either homozygous dominant or heterozygous)

Answer 5

Test cross where we breed mystery individual with homozygous recessive

Question 6

What are the degrees of dominance and differentiate between these three.

Answer 6

Complete dominance is when dominant allele masks recessive allele. Incomplete dominance is blending or when phenotype of F1 generation is in between parental phenotypes. Codominance is when two dominant alleles affect the phenotype in separate, distinguishable ways.

Question 7

What is the suppression of the effect of one such gene by another?

Answer 7

Epistasis