Genetics Focus Words

Aa is

• homozygous (purebred)
• heterozygous (hybrid)

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive
• dominant
• lower case letter
• both 

When a capital letter is used, what kind of allele is being represented?

• Recessive Allele
• Codominance
• Punnett Squares
• Dominant Allele

Which of the following alleles is homozygous (purebred) recessive?

• Tt
• tt
• TT
• t

What is a phenotype

• The genetic make up (code)
• The physical trait

Having two different genes for a trait (sometimes called hybrid).

• protein
• homozygous
• heterozygous
• genotype

Having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

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

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

These are used to predict the outcomes of crosses.

• Punnett Squares
• karyotypes
• line graphs
• pedigrees

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes