Punnett Squares

Front

What is the physical appearance of an organism based on traits?

Back

Phenotype

Front

What is the probability of getting white fur (b) if B = brown fur and b = white fur in a Punnett square?

Back

50%

Front

In a heterozygous genotype, which allele takes over in the phenotype?

Back

Dominant

Front

What do genotypes code for?

Back

Phenotype (physical trait)

Front

Which of the following genotypes is homozygous dominant: A, Aa, AA, aa?

Back

AA

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

Define genotype.

Back

The genetic makeup of an organism, represented by alleles.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even when 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.

Front

What does heterozygous mean?

Back

Having two different alleles for a particular gene.