Heredity and Genetic Traits

Front

What are the two alleles that control the phenotype called?

Back

Genotype.

Front

Which of the following is NOT an example of a phenotype?

Back

Scars on your skin.

Front

What structure in genetics resembles a long twisted/coiled ladder?

Back

DNA.

Front

If brown eyes are dominant over blue eyes, what color eyes will an offspring have if one parent has a brown allele and the other has a blue allele?

Back

Brown.

Front

What genotype results in brown eyes being dominant?

Back

Both parents have brown eyes.

Front

Define phenotype in the context of genetics.

Back

Phenotype refers to the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is the relationship between genotype and phenotype?

Back

Genotype is the genetic constitution of an individual, while phenotype is the expression of that genotype in the organism's traits.

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its phenotype even in the presence of a recessive allele.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its phenotype when two copies are present (homozygous).

Front

How can you determine the genotype of an organism with a dominant phenotype?

Back

You can perform a test cross with a homozygous recessive individual to see if any offspring display the recessive phenotype.