Bio 2 Genetics Summative Assessment

B=brown eyes
b= blue eyes
What is true about 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-LS3-1

W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?

• none
• 3/4
• 1/2
• all

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Pea plants can have green or yellow seeds. In a pea plant that is heterozygous for seed color, the allele for yellow seeds masks the effects of the allele of green seeds. Which of the following terms best describes the allele for yellow seeds?

• codominant
• recessive
• dominant
• sex-linked

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

Which of the characteristics is a lion least likely to pass on to its offspring?

• fur color
• length of tail
• scars on leg
• body size

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In guinea pigs, the alleles for black hair(B) is dominant to the allele for brown hair(b). Two black-haired guinea pigs are crossed. One of the pigs is homozygous for black hair and one is heterozygous. What percentage of their offspring are expected to have black hair?

• 25%
• 50%
• 75%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

• 25%
• 50%
• 75%
• 100%

Tags

NGSS.HS-LS3-1

The genotype of an organism describes the

• codons that make up the genes
• number of gene's on the chromosmes
• genetic make-up of a trait
• type of chromosomes in the nucleus

Mark is a tall, 11 year old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which of his traits did he most likely inherit?

• height
• the scar
• his intelligence
• ability to play drums

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What characteristic would a child not inherit from parents?

• freckles
• eye color
• hair style
• dimples

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2