Heredity Quiz

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• all of the choices result in yellow

Which of the following alleles is homozygous (purebred) recessive?

• Tt
• tt
• TT
• t

Since human cells carry 2 copies of each chromosome (one from each parent), they have 2 versions of each gene; these versions of a gene are called ________ and can be dominant or recessive.

• alleles

• homologous chromosomes

• genome

• gene

The passing of traits from parent to offspring is known as

• Heredity

• Genetics

• Hybrid

• Probability

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

A ____________ is a piece of DNA that codes for a trait and is the basic unit of heredity.

• Allele

• Gene

• Dominant Trait

• Recessive Trait

What is the yellow seed genotype?

• aa
• Aa
• AA
• AA or Aa

Which of the following genotypes would be considered heterozygous?

• BB
• gg
• Ff
• TT

Which of the following is a phenotype?

• Bb
• Black fur

Is Bb dominant or recessive?

• dominant
• recessive