Quizzapalooza Exam 3 Genetics

Exam 3 Practice Questions

What does SNP stand for?

A) Single Nucleotide Polymorphism

B) Small Nucleotide Polymorphism

C) Singular Nucleotide Protein

D) Somatic Nucleotide Polymorphism

Single Nucleotide Polymorphism

STRS are usually identified with ________, while VNTRS are identified with __________ blot.

A) PCR; Northern Blot

B) PCR; Southern Blot

C) Western Blot; Southern

D)Western Blot: PCR

PCR; Southern Blot

Define Hemizygous

a genetic condition where only one allele is present particular gene

which human sex is hemizygous: Male or Female?

Male (XY)

(Blood) A and B encode gene products that modify the H antigen on RBC. These “modifications” are what sorts of molecules?

Sugars

what mode of inheritance is shown by the pedigree below??

Y-linked inheritance

including RH factor, how many ABO blood phenotypes can be observed in a human population?

8 (A ±, B±, AB±, O±)

which blood group is considered the universal recipient?

AB+

Quantitative trait Loci (QTL) are a set of genes to contribute to one particular trait. These traits are often referred to as continuous. What is an example of a continuous trait?

A) Pea Color

B) Human Height

C) ABO Blood Types

D) Fruit Fly Eye Color

Human Height

In mice, when two heterozygous yellow parents mate, the progeny show up in a 2:1 ratio. Molecularly, why are we not able to observed the third phenotypic group?

a) the third phenotypic group has a lethal genotype and does not survive

b)the third phenotypic group has a genetic mutation that renders it invisible under the microscope

c)the third phenotypic group is indistinguishable from one of the other two phenotypic groups

d) the third phenotypic group undergoes rapid degradation during tissue sampling and processing.

the third phenotypic group has a lethal genotype and does not survive.

Which is the correct statement regarding, the molecular basis of incomplete dominance in grey chicken from a black and white chicken mating?

A) the black and white alleles exhibit Co-dominance, resulting in a mixed expressions of both colors.

B) the grey phenotype results from a mutation in the genetic code that affects the expression of both black and white pigments.

C) the grey phenotype is a result of the recessive allele not being able to express

D) the grey phenotype arises due to the production of a novel pigment resulting from the interaction between the black and white pigments.

the grey phenotype is a result of the recessive allele not being able to express.

• the dominant allele cant make enough color by itself

wheat kernel color is a polygenic trait. there are multiple alleles that are equal and addictive in effect. Which of the following genotype would result un the darkest possible color when the following parents mate: RrCc* RrCc?

a)RRCc

b) RrCc

c)rrCc

d)RRCC

e)rrcc

f)Rrcc

RRCC

(each dominant allele equally contributes to kernel color)