How many chromosomes does a human have?

• 23

• 46

• 84

• 10

Tags

NGSS.HS-LS3-1

If the dominant trait is not having freckles (F) and the recessive trait is to have freckles (f), which TRAIT combination(s) below would represent a person who has no freckles? (select all that apply)

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the phenotype 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-LS3-2

What belongs in the last box?

• RR

• Rr

• rr

• ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

T - tall and t = short
In the punnett square below, what belongs in the missing square?

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1

Look at the punnett square shown. What TRAIT pair would replace the "?"

b

wW

Ww

WW

ww

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Tags

NGSS.HS-LS3-1

Both parents in this Punnet square

• are homozygous dominant
• are homozygous recessive
• are heterozygous
• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Fill in the Yellow Box

c

bb

BB

Bb

bB

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following allele pairs is heterozygous?

• RR

• Qq

• ss