Genetics

Front

What is the probability of a blue-eyed baby from two brown-eyed parents (Bb)?

Back

25%

Front

What does it mean to have two different genes for a trait?

Back

Heterozygous

Front

What is the genotypic ratio when crossing two heterozygous plants (Tt x Tt) where tall (T) is dominant to short (t)?

Back

1:2:1

Front

What is the phenotypic ratio when crossing two heterozygous plants (Tt x Tt) where tall (T) is dominant to short (t)?

Back

3:1

Front

What are the possible genotype percentages when a homozygous dominant dog (BB) is crossed with a heterozygous dog (Bb)?

Back

50% BB and 50% Bb

Front

Define homozygous.

Back

Having two identical alleles for a trait.

Front

Define genotype.

Back

The genetic makeup of an organism.

Front

Define phenotype.

Back

The observable characteristics of an organism.

Front

What is a Punnett Square used for?

Back

To predict the genotypes and phenotypes of offspring from genetic crosses.

Front

What is the difference between dominant and recessive traits?

Back

Dominant traits are expressed when at least one dominant allele is present; recessive traits are expressed only when two recessive alleles are present.