Genetics and University

The alleles, or letters, for the gene or trait are called.

• phenotype

• genotype

• homozygous

• hybrid

The trait which shows only if both parents pass it on is called.

• recessive

• dominant

Tags

NGSS.HS-LS3-1

When you have two different alleles for a trait it is called.

• heterozygous

• dominant

• homozygous

• recessive

When you have two of the same alleles for a trait it is called.

• heterozygous

• recessive

• homozygous

• dominant

A phenotype in which both alleles are expressed fully such as AB blood type is called.

• semi-dominant

• polygenic

• codominance

• incomplete dominance

The form of the trait that is observed, or the physical look of a trait is called.

• phenotype

• genotype

• homozygous

• heterozygous

The allele which is expressed if the individual is heterozygous is called.

• recessive allele

• regulatory allele

• dominant allele

• hybrid allele

A genotype of the letters Dd is an example of.

• heterozygous

• homozygous

• pure-bred

• homozygous dominant

A genotype of the letters DD is an example of.

• homozygous recessive

• heterozygous

• homozygous dominant

• hybrid

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

• Tt
• tt
• TT
• t