Genetics Questions

Which of the following answer choices correctly describes a genotype of Aa?

• homozygous dominant

• homozygous recessive

• heterozygous

• none of the above

Who is the person known as the Father of Genetics?

• Gregor Mendel

• Bill Nye

• Isaac Newton

• Louis Pasteur

Which of the following choices would be homozygous dominant?

• Yy

• XY

• YY

• yy

True or False: Mendel observed that in pea plants, stem height is dominant to flower color. Which explanation is correct?

• True: The height and flower color are directly linked.

• True: Color is always recessive to height.

• False: Flower color is always dominant to stem height.

• False: Stem height and flower color are two different traits controlled by completely different alleles.

Is it possible for a parent with a genotype of BB and another parent with a genotype of bb to produce a child with genotype bb?

• Yes

• No

Would someone with a genotype of Tt be able to pass on a recessive allele to offspring?

• Yes.

• No

Which of the following would be an example of a phenotype?

• BB

• a linked gene

• chromosome

• brown fur color

Which of the following best explains the Law of segregation?

• Two traits fuse together to form a new trait.

• Two traits separate to form two new traits.

• Two alleles separate during mitosis.

• Two alleles separate during meiosis.

Which of the following would be an example of the Law of Independent Assortment?

• The alleles for fur color (one for black and one for brown) separating during meiosis.

• One plant is tall and has red flowers. Another plant is tall and has white flowers.

• The flower color red showing up more often than the color white.

• People with blue eyes almost always have fair skin and either blonde or red hair.

Which of the following is a true statement?

• A genotype of Bb is recessive to a genotype of BB.

• A genotype of bb is recessive to another genotype of bb.

• A genotype of either BB or Bb will produce a dominant trait.

• A genotype of either bb or Bb will produce mostly recessive traits.