Powers Mendelian & Non Mendelian Quiz Preview

The allele that is always expressed if present in the genotype is called the ___ allele.

• recessive
• dominant
• zygote
• heterozygous

Which of Mendel’s laws BEST explains why an organism with a heterozygous genotype will show a dominant phenotype?

• Law of Dominance
• Law of Segregation
• Law of Independent Assortment
• Law of Inheritance

Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that any of their children will inherit the disorder?

• 25%
• 50%
• 75%
• 100%

Which of Mendel’s laws states that organisms inherit two copies of each gene and donate only one copy to each of their offspring because the alleles separate into gametes during meiosis?

• Law of Dominance
• Law of Segregation
• Law of Independent Assortment
• Law of Inheritance

Fill in the Punnett Square below with the correct genotype for the box with the question mark.

• TT
• Tt
• tt

If two parents with dominant phenotypes produce an offspring with a recessive phenotype, what can you conclude about the parents’ genotypes?

• one parent is homozygous recessive
• only one parent is heterozygous
• both parents are homozygous dominant
• both parents are heterozygous

Human height occurs in a continuous range because it is affected by the interaction of many genes, which is known as which pattern of inheritance?

• Incomplete dominance
• Complete dominance
• Polygenic trait
• Codominance

If two parents have blood type AB and blood type O, what are all the possible phenotypes of their offspring's blood type?

• AB and O
• A, B, and O
• A, B, and AB
• A and B

If two alleles are the same for a certain trait they are considered to be...

• Homozygous
• Heterozygous
• Heterotype
• Common

The pattern of inheritance where two different alleles for a trait blend together and you see the mix of the two in the phenotype is called?

• Incomplete dominance
• Complete dominance
• Polygenic Traits
• Codominance