Pedigree Check In

Which term correctly describes an individual with a pair of the same alleles for a trait? 

• homologous
• heterozygous
• homozygous
• heterologus

 An individual with two different alleles for a specific trait is said to be _____________.

• homozygous
• heterogenous
• homogenous
• heterozygous

Of 12 hamsters just born, 9 have brown fur and 3 have white fur. The trait for white fur is considered to be ________.

• recessive
• weak
• strong
• dominant

 Phenotype refers to the _________ of an individual

• genetic makeup
• physical appearance
• recessive alleles
• dominant alleles

 A pea plant is heterozygous for height (Tt) and it is crossed with a homozygous short (tt) plant. Use a Punnett square to determine the probability of one of their offspring being short.

• 100%
• 75%%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

How many females are in this pedigree?

• 3
• 4
• 6
• 7

How many of the males in this pedigree show the trait being studied?

• 2
• 3
• 4
• 6

Tags

NGSS.HS-LS3-2

 Look at the Punnett square. If the two parents represented in the Punnett square have four offspring, what does the Punnett square tells you?

• two of the offspring will definitely be heterozygous.  
• one of the offspring will definitely show the recessive trait.
• there is a 50% offspring will have the genotype Rr.

• there is a greater chance for the offspring to be RR than rr.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In the second generation-how many people have the disease or display the physical trait?

• 2
• 4
• 5
• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

How many people in this whole pedigree have the trait/disease?

• 2
• 3
• 4
• 6

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2