Genetics

Gregor Mendel used pea plants to study

• Inheritance of traits
• flowering
• cross-pollination

If a Heterozygous Rr pea plant is crossed with a Homozygous rr pea plant, what would be the percentage that the offspring will be recessive rr?

• 50%
• 75%
• 25%

If a Mother with Type A (Ao) blood and a father with type O (oo) blood have children, what would be the percentage that their offspring would be Type B blood?

• 50%
• 0%
• 35%

Organisms that have 2 of the same alleles for a particular trait are said to be

• heterozygous
• hybrid
• homozygous

When 2 dominant alleles (HB) are both expressed are said to be

• codominant
• diploid
• incomplete dominant

------is the combination of two alleles that are different from one another.

• homozygous
• heterzygous
• phenotype
• trait

---- Is the combination of two alleles that are the same

• genotype
• homozygous
• phenotype
• trait

----is the type of gene that always shows itself when present

• genotype
• homozygous
• phenotype
• dominant

The physical appearance of the allele combination the offspring receives

• genotype
• homozygous
• phenotype
• dominant

A type of gene that can be hidden is called

• genotype
• recessive
• dominant
• allele