8th Grade #4: Genes and Heredity

Front

What is the probability of getting white fur if B = brown fur and b = white fur?

Back

50%.

Front

What allele combination represents a heterozygous genotype?

Back

Aa.

Front

What is the probability of producing heterozygous offspring from a cross between two heterozygous parents?

Back

50%.

Front

Do all living organisms have genetic material?

Back

Yes, all living organisms have genetic material.

Front

Which base pair does adenine always pair with?

Back

Thymine.

Front

What is a Punnett square used for?

Back

To predict the probability of offspring genotypes from parental genotypes.

Front

Define genotype.

Back

The genetic constitution of an individual, represented by alleles.

Front

Define phenotype.

Back

The observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present; recessive alleles require two copies to express their trait.

Front

What does homozygous mean?

Back

Having two identical alleles for a particular gene.