Basic Genetics (Monohybrid Crosses)

Front

Who is known as the father of genetics?

Back

Gregor Mendel

Front

What is the genotype for a purebred brown fur in a monohybrid cross where brown (B) is dominant over white (b)?

Back

BB

Front

What is a phenotype?

Back

The physical trait of an organism.

Front

Which of the following is homozygous? Zz or SS?

Back

SS

Front

What does homozygous mean?

Back

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

Front

What is a genotype?

Back

The genetic makeup (code) of an organism.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous has two identical alleles, while heterozygous has two different alleles.

Front

If a brown fur (B) is crossed with a white fur (b), what are the possible genotypes of the offspring?

Back

Bb and bb.

Front

What is the expected phenotypic ratio in a monohybrid cross?

Back

3:1 ratio of dominant to recessive traits.

Front

What does it mean if an organism is heterozygous for a trait?

Back

It has two different alleles for that trait.