pedigrees

Is this trait (the shaded individuals) dominant or recessive?

• dominant
• recessive

Tags

NGSS.HS-LS3-1

Freckles (F) are dominant over nonfreckles.   What is the phenotype of individual #3

• Ff
• ff
• freckles 
• nonfreckles 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In certain species of plants, purple flowers (P) are dominant to white flowers (p). If two heterozygous plants are crossed, what will be the phenotype of the offspring?

• 100% purple flowers
• 100% white flowers
• 75% white flowers, 25% purple flowers
• 25% white flowers, 75% purple flowers

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

How many girls in this family express this recessive disorder?

• 4
• 5
• 6
• 7

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Aa is

• homozygous
• heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Examine the pedigree. The allele for the presence of a white forelock is dominant. Therefore, we can tell from the chart that in the couple labeled 2:

• the male is heterozygous and the female is homozygous.

• the male is homozygous and the female is heterozygous.

• the male is homozygous and the female is homozygous.

• the male is heterozygous and the female is heterozygous.

What is the relationship between person I 1 and III 2?

• Father and Son
• Father and Daughter
• Grandfather and Granddaughter
• Uncle and Niece 

How many alleles (letters) does a child get from each parent for each trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

Dominant alleles are represented by a:

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