Pedigree/Punnett Square Review

Multiple Choice

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

Multiple Choice

How many kids did the mother and father from the first generation have?

• 2
• 4
• 5
• 6

Multiple Choice

How many kids did the mother and father from the first generation have?

• 2
• 4
• 5
• 6

Multiple Choice

What is this?

• Pedigree
• Karyotype
• Venn diagram
• Punnett Square

Multiple Choice

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

• homologous
• heterozygous
• homozygous
• heterologus

Multiple Choice

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

• homozygous
• heterogenous
• homogenous
• heterozygous

Multiple Choice

 Phenotype refers to the _________ of an individual

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

Multiple Choice

 When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ______________ allele.

• dominant
• recessive
• both
• neither

Multiple Choice

 Which of these would best be described as a phenotype?

• blue eyes
• mutation
• Bb
• Tt

Multiple Choice

 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%

Multiple Choice

 One dog carries homozygous, long-haired traits (SS), and its mate carries homozygous short-haired traits (ss). Use a Punnett square to determine the probability of one of their offspring having long hair.

• 100%
• 75%
• 50%
• 25%

Multiple Choice

How many females are in this pedigree?

• 3
• 4
• 6
• 7

Multiple Choice

How many females are in this pedigree?

• 3
• 4
• 6
• 7

Multiple Choice

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

• 2
• 3
• 4
• 6

Multiple Choice

When 2 pea plants heterozygous for height (Tt) are crossed, what is the ratio of the resulting genotypes (TT:Tt:tt)?

• 1:2:1
• 2:1:1
• 0:3:1
• 0:2:2

Multiple Choice

 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% chance for each of the 4 offspring to have the genotype Rr.
• there is a greater chance for the offspring to be RR than rr.

Multiple Choice

Which genotype is heterozygous?

• HH
• Hh
• hh

Multiple Choice

Which genotype is homozygous dominant?

• HH
• Hh
• hh

Multiple Choice

How many individuals are there in the 3rd generation?

• 2
• 3
• 4
• 6

Multiple Choice

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

Multiple Choice

Which of these would best be described as a phenotype?

• Bb
• Pp
• Brown hair
• Mutation

Multiple Choice

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnett square to determine the probability of one of their offspring having a white color.

• 100%
• 25%
• 75%
• 50%

Multiple Choice

What is offspring?

• children

• parents

• siblings

• couples

Multiple Choice

An allele that is masked when a dominant allele is present. The "weaker" gene. 

• Dominant Allele
• Recessive Allele

Multiple Choice

An allele whose trait always shows up in the organism when the allele is present. The "stronger" gene. 

• Dominant Allele
• Recessive Allele

Multiple Choice

An organism’s genetic makeup or allele combination. (The letters)

• Genotype

• Phenotype

• Lettertype

• Physiotype