Monohybrid Cross Practice

Front

What is one of the two forms of a gene called?

Back

Allele

Front

How many alleles do each person carry for a trait?

Back

2

Front

What type of allele always shows up in an organism when it is present?

Back

Dominant

Front

In cacti, if long arms (A) are dominant to short arms (a), what percentage of offspring from two heterozygous cacti will have short arms?

Back

25%

Front

What does each box on a Punnett Square represent in terms of an offspring's genotype probability?

Back

25%

Front

Define 'genotype'.

Back

The genetic makeup of an organism, represented by alleles.

Front

Define 'phenotype'.

Back

The observable traits of an organism, determined by its genotype.

Front

What is a 'Punnett Square'?

Back

A diagram used to predict the outcome of a genetic cross.

Front

What does 'heterozygous' mean?

Back

Having two different alleles for a particular gene.

Front

What does 'homozygous' mean?

Back

Having two identical alleles for a particular gene.