Module 4:Mendelian Genetics

1. What term describes an allele that is expressed when present?

• Recessive

• Dominant

• Homozygous

• Hetero

1. What is represented by a capital letter in genetics?

• Recessive Allele

• Dominant Allele

• Homozygous genotype

• Heterozygous henotype

1. If an organism has two different copies of a gene, it is called:

• 1. Homozygous

• Heterozygous

• Phenotype

• Genotype

1. What does the genotype of an organism represent?

• 1. Physical appearance

• Genetic information

• Dominant traits only

• Recessive traits only

1. Which law states that different genes and their alleles are inherited independently?

• Law of Dominance

• • Law of Segregation

• • Law of Independent Assortment

• Law of Probability

1. What did Gregor Mendel use for his experiments in genetics?

• • Fruit flies

• • Garden peas

• • Mice

• Bacteria

1. The offspring of the parental cross of pure breeding plants are called:

• • F1 generation

• • F2 generation

• • P generation

• S generation

1. In a Punnett Square, what does each box represent?

• • A possible phenotype

• • A possible genotype

• • A dominant trait

• A recessive trait

1. What is the phenotype of a plant with a genotype of homozygous recessive for flower color?

• • Purple flower

• • White flower

• Yellow Flower

• Red Flower

1. If a plant has a genotype of “Rr,” what is its phenotype regarding seed shape?

• • Round seed

• • Wrinkled seed

• Mixed Seed

• No seed