Life Science Review: Genetics

A green pea plant (Gg) is crossed with a yellow pea plant (gg). Describe the genotype of the offspring. (Be sure to remember that the capital letter is dominant).

• 50% heterozygous and 25% homozygous recessive
• 50% heterozygous and 50% homozygous recessive
• 100% homozygous recessive
• 25% heterozygous and 50% homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A tall plant (Tt) is crossed with a short plant (tt). What is the phenotype of the offspring?

• 75% tall; 25% short
• 25% tall; 75% short
• 50% tall; 50% short
• 100% tall

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

What are the possible phenotype(s) of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What are the possible genotypes for this cross?

• TT = 25% Tt= 50% tt=25%

• all tall

• TT= 75% tt = 25%

• Tt = 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the missing allele?

• a
• A
• AA
• aa

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In mussels, the allele for brown coloring (B) is dominant, and the allele for blue coloring(b) is recessive. For which parental genotypes are 100% of the offspring expected to be blue?

• BbxBb
• bbxbb
• BBxbb
• BBxBB

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which deals with the transmission of inherited traits from one generation to another?

• anatomy
• ecology
• genetics
• forensics

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the possible phenotypes in this punnett square?

• Bb, bb, BB
• purple, white
• Bb, bb
• light purple

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

What is a gene?

• An entire chromosome that  codes for a trait
• a piece of clothing
• a piece of a DNA on chromosome that codes for a trait
• Chemical messengers in your brain that code for a trait

Tags

NGSS.HS-LS3-1