Punnett Square Homework

What is a Punnett square used for?

• To analyze the genetic makeup of an individual.

• To determine the gender of an offspring.

• To predict the possible genotypes and phenotypes of offspring in a genetic cross.

• To study the inheritance of acquired traits.

In a monohybrid cross, how many alleles does each parent contribute?

• 1

• 3

• 4

• 2

What is the principle of complete dominance?

• One allele in a gene pair is dominant over the other allele

• Both alleles in a gene pair are dominant

• The dominant allele is always expressed in the phenotype

• Complete dominance occurs when there is no dominant allele

What is the genotype of a homozygous dominant individual?

• dd

• DD

• HH

• D

What is the phenotype of a heterozygous individual with complete dominance?

• Recessive

• Co-dominant

• Intermediate

• Dominant

What is the probability of obtaining a homozygous recessive offspring from a heterozygous parent?

• 50%

• 25%

• 10%

• 75%

What is the genotype of a recessive individual?

• Incomplete dominance (AaBb)

• Homozygous dominant (AA)

• Homozygous recessive (aa)

• Heterozygous dominant (Aa)

What is the phenotype of a homozygous recessive individual?

• Expresses the dominant trait

• Does not express any trait

• Expresses the recessive trait

• Expresses both dominant and recessive traits

What is the probability of obtaining a heterozygous offspring from two heterozygous parents?

• 75%

• 50%

• 25%

• 10%

What is the probability of obtaining a dominant phenotype from a heterozygous parent?

• 0.50

• 0.75

• 0.25

• 1.00