Punnett Square Practice

If two brown-eyed parents (Bb) have a baby, what is the chance the baby is blue-eyed?

• 0%

• 25%

• 50%

• 75%

What does the letter 'b' represent in genetics?

• A dominant allele, such as black fur or brown eyes.

• A recessive allele, such as white fur or blue eyes.

• A gene that determines height in plants.

• A chromosome that carries genetic information.

What is a dominant allele?

• An allele that expresses its trait only when two copies are present.

• An allele that expresses its trait even when only one copy is present.

• An allele that has no effect on the phenotype.

• An allele that is always recessive.

What does the letter 'B' represent in genetics?

• A recessive allele, such as blue fur or blue eyes.

• A dominant allele, such as brown fur or brown eyes.

• A gene that has no effect on phenotype.

• A type of mutation that causes color blindness.

If a Punnett Square shows a 50% probability for a trait, what does that mean?

• There is a 50% chance that the offspring will express that trait.

• The trait will definitely be expressed in the offspring.

• There is no chance that the trait will be expressed in the offspring.

• The trait will be expressed in all offspring.

What is the difference between genotype and phenotype?

• Genotype refers to the observable traits of an organism, while phenotype refers to the genetic makeup (alleles).

• Genotype refers to the genetic makeup (alleles) of an organism, while phenotype refers to the observable traits.

• Genotype and phenotype are the same and can be used interchangeably.

• Genotype refers to the physical environment of an organism, while phenotype refers to the genetic makeup.

In a Punnett Square, what do the letters on the top and side represent?

• The physical traits of the offspring

• The alleles contributed by each parent

• The environment in which the parents live

• The number of offspring produced

What is the genotype of an organism with brown fur that is heterozygous?

• AA

• bb

• Bb

• AB

What is a Punnett Square?

• A diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles from the parents.

• A tool for measuring the height of plants in a garden.

• A method for calculating the age of fossils based on their layers.

• A chart used to track the migration patterns of animals.

What is the genotype for a yellow plant?

• gg

• YY

• Gg

• yy