Genetics Quick Quiz #1

Aa is an example of

• homozygous dominant
• homozygous recessive
• heterozygous
• none of these

Tags

NGSS.HS-LS3-1

When is a recessive allele expressed in offspring?

• when two copies are present
• when parents have no dominant alleles
• when the offspring is heterozygous
• when one copy is present

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

NGSS.HS-LS3-3

Fred's fish have babies. Some of the babies have red scales, some have yellow scales, and others have orange scales. What are the genotypes of the baby fish?

• FF, FF*, and F*F*

• FF, Ff, and ff

• Red, orange, and yellow

• FF, F*F*, and ff

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B=brown eyes
b= blue eyes
What is true about these two brothers that have brown eyes:
One has genotype BB the other Bb.

• they have same phenotype and genotype
• they have different genotypes and phenotypes
• they have same phenotype but different genotypes
• they have same genotype but different phenotypes

Tags

NGSS.HS-LS3-2