Genetics

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-LS3-3

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous genes
• mutated DNA

Tags

NGSS.HS-LS3-1

Aa is

• homozygous (purebred)
• heterozygous (hybrid)

Tags

NGSS.HS-LS3-1

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive
• dominant
• lower case letter
• both 

Why are your chromosomes arranged in pairs?

• Because DNA has a double-helix structure.
• Because pairs are able to divide more easily.
• Because you get one from your mother and one from your father.
• Scientists aren't sure.

Tags

NGSS.HS-LS3-1

What kind of traits show themselves?

• shy traits
• brave traits
• recessive traits
• dominant traits

Tags

NGSS.MS-LS4-4

What is the heterozygous genotype for having brown eyes?
(Remember: Brown (B) is dominant over blue (b).)

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

What is the homozygous genotype for having brown eyes?
(Remember: Brown (B) is dominant and blue (b) is recessive.)

• BB
• Bb
• bb

Tags

NGSS.HS-LS3-1

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