Heredity Quiz

What does the term "Non-Mendelian Genetics" refer to in the study of genetics?

• The study of traits that segregate according to Mendel's laws.

• The study of traits that do not follow Mendel's simple inheritance patterns.

• The study of genetic mutations only.

• The study of cellular reproduction.

What did scientists achieve for the first time with the help of Gregor Mendel's discoveries?

• Cloning of animals

• Creation of genetic maps

• Prediction and description of traits in offspring

• Identification of genetic diseases

What did scientists begin to notice about traits predicted in test crosses in relation to Mendel's laws of inheritance?

• All traits followed Mendel's laws exactly.

• Some traits did not follow Mendel's laws as expected.

• Traits could be predicted without any test crosses.

• Mendel's laws were completely incorrect.

What is the result when a dominant allele for red flowers (RR) is crossed with a recessive allele for white flowers (rr) in snapdragons, demonstrating incomplete dominance?

• Red flowers

• White flowers

• Pink flowers

• No flowers

In incomplete dominance, how is the phenotype of the offspring when a dominant allele is paired with a recessive allele?

• Completely like the dominant allele

• Completely like the recessive allele

• A mixture of both alleles

• No visible phenotype

What does it mean when the dominant allele is not completely expressed in the presence of a recessive allele?

• The dominant allele suppresses the recessive allele completely

• The recessive allele suppresses the dominant allele

• The phenotype is a blend of both alleles

• The alleles separate and do not interact

What is the result of crossing a long-tailed cat (HH) with a short-tailed cat (hh) when tail length in cats is an incompletely dominant trait?

• All offspring will have long tails

• All offspring will have short tails

• All offspring will have medium tails

• Offspring will have a mix of long, medium, and short tails

What is the expected percentage of offspring with green flowers when two green orchids are crossed in a scenario of incomplete dominance?

• 50%

• 25%

• 75%

• 100%

What does codominance in genetics refer to?

• A) A single allele being expressed over another

• B) Both alleles contributing to the phenotype in separate and distinguishable ways

• C) Traits skipping generations before they are expressed

• D) The blending of two traits to form a new phenotype

In the example of roan cows, what genetic combination results from the cross of a red cow (RR) and a white cow (WW)?

• A) RRWW

• B) RWRW

• C) RW

• D) RR