Genetics Practice

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

An offspring will receive how many alleles from each parent to determine a specific trait?

• one
• two
• three
• five

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

having two different genes for a trait (sometimes called hybrid).

• protein
• homozygous
• heterozygous
• genotype

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which of the following genotypes is a purebred?

• Bb
• Gg
• bb
• Dd

Hereditary information is stored inside the

• ribosomes, which have chromosomes that contain many genes
• ribosomes, which have genes that contain many chromosomes
• nucleus, which has chromosomes that contain many genes
• nucleus, which has genes that contain many chromosomes

What's the probability an offspring will have the dominant Brown Eyes in this Punnett Square

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

Why does Scar have a scar but his brother Mufasa does not?

• Mufasa did not inherit it

• The scar gene skipped a generation

• The scar is an environmental trait

• Mufasa is not his brother

If brown eyes are dominant and blue eyes are recessive, what color eyes do the parents in this Punnett Square have?

• one has brown eyes and the other has blue eyes

• they both have blue eyes

• they both have brown eyes

• there's no way to tell based on this information