Mendelian Inheritance

What is the definition of Homozygous?

• When one allele is dominant and one is recessive
• When an individual has two sets of the same allele.
• when it is neither dominant or recessive

What is the definition of heterozygous? 

• when an individual has two sets of the same allele
• when it is neither dominant or recessive
• A pair of genes where one is dominant and one is recessive.

The genotype is the ______________.

• physical appearance
• Genetic makeup
• Alleles gained from one parent

The phenotype is the _______________.

• physical appearance of an organism
• Genetic makeup 
• Alleles acquired from a specific parent.

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Each parent contributes one of the genes for a particular trait. The genes of the pair are called:

• variables
• gametes
• hybrids
• alleles

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Which of the following alleles is homozygous recessive?

• Tt
• tt
• TT
• T

The Law of Segregation states: 

• alleles are inherited together
• alleles separate during gamete formation
• only dominant genes are inherited