B-LS3-3 Genetics

Front

What is the genotype of a homozygous dominant individual?

Back

BB

Front

What is the genotype of a homozygous recessive individual?

Back

bb

Front

What is the genotype of a heterozygous individual?

Back

Bb

Front

In a Punnett square, what does each box represent?

Back

Each box represents a possible genotype of the offspring from the parental genotypes.

Front

What is the phenotype of a grey fowl in Andalusian fowls?

Back

The phenotype of a grey fowl is heterozygous (Bb).

Front

What is the expected genotype ratio from a cross between Bb (grey) and bb (white)?

Back

0 BB: 2 Bb: 2 bb.

Front

What is the probability of obtaining a homozygous dominant offspring from a Bb x bb cross?

Back

50%.

Front

What does incomplete dominance mean in genetics?

Back

Incomplete dominance occurs when the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What is the mode of inheritance if a trait appears in every generation?

Back

Dominant inheritance.

Front

How do you calculate the average population growth rate?

Back

(Population at end of period - Population at start of period) / Number of years.