Genetics Test

What did Gregor Mendel use to discover the principles that rule heredity?

• Pea Plant
• Pigeons
• Pear trees
• Photosynthesis

Tags

NGSS.HS-LS3-1

What is a phenotype?

• The expression of a trait; what you see.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

Tags

NGSS.HS-LS3-3

The inherited combination of alleles is known as the offspring's

• heredity
• phenotype
• genotype
• redigree

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygous yellow pea plant's genotype would be:

• YY

• yy

• Yy

• Yg

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring? (T = tall, t = short)

• 100% Tt

• 50% Tt, 50% tt

• 75%Tt, 25%tt

• 25%TT, 50%Tt, 25%tt

Which of the following answer choices shows heterozygous for brown eyes?

• bb
• BB
• Gg
• Bb

Which of the following answer choices shows homozygous dominant for brown eyes?

• bb
• BB
• Gg
• Bb

Which of the following answer choices shows homozygous recessive for blue eyes?

• bb
• BB
• Gg
• Bb

Who determines the gender of a boy?

• Boys receive a Y chromosome from mom; X from dad
• Boys receive an X chromosome from mom and dad
• Boys receive a Y chromosome from mom and dad
• Boys receive an X chromosome from mom; Y from dad