Punnett Squares

Front

What are Punnett Squares used for?

Back

Predicting the traits of offspring made in sexual reproduction.

Front

How are dominant alleles represented?

Back

By a capital letter.

Front

What genotype is homozygous recessive?

Back

tt.

Front

What is the probability of offspring having short tusks when a heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant?

Back

50%.

Front

What complex molecule carries genetic information that defines an organism's traits?

Back

DNA.

Front

What is the purpose of a Punnett Square?

Back

To visualize the genetic combinations of offspring from parental genotypes.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even when only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is the genotype of an organism with one dominant and one recessive allele?

Back

Heterozygous.