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Question 1

Which of the following is NOT an example of non-Mendelianinheritance?

Question 1 options:

incomplete dominance

codominance

epistasis

heterozygosity

Question 2

A ________ is the location of a gene on a chromosome.

Question 2 options:

gene house

genotype

locus

allele

Question 3

Alleles come in many forms, and all of them are expressedequally.

Question 3 options:
True
False

Question 4

To determine the genotype of an individual expressing a dominantphenotype, we have to perform a _______________ with an individualthat is homozygous recessive.

Question 4 options:

test cross

independent cross

segregation

alternation

Question 5

__________ is the study of transmission of biologicalinformation from one generation to the next and how the informationis expressed.

Question 5 options:

Mendelism

allelism

heterozygotics

genetics

Question 6

Mendel

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Keith Leannon
Keith LeannonLv2
28 Sep 2019

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Related questions

QUESTION 1

Jim is blood type A, his brother John is type O and his sister Jane is type AB. What are the genotypes of their parents?
A.
IAi and IBi
B.
IAIA and IBIB
C.
IAi and IBIB
D.
IAIB and ii
E.
IAIA and IBi

QUESTION 2

Which of the following is true for alleles that show incomplete dominance?
A.
Heterozygotes have a genotype like the dominant allele.
B.
Homozygotes have a genotype like the recessive allele.
C.
Heterozygotes have a phenotype intermediate between the dominant and recessive alleles.
D.
Homozygotes have the same phenotype as the heterozygotes.
QUESTION 3

Which principle of inheritance concluded that when games are formed in meiosis, the two alleles of each gene separate from one another, and each gamete receives only one allele?
A.
independent assortment
B.
heterozygosity
C.
segregation
D.
dominance
QUESTION 4

Which term best describes a condition in which alleles at one locus can alter the expression of alleles at another locus?
A.
polygenic inheritance
B.
codominance
C.
multiple alleles
D.
pleiotropy
E.
epistasis
QUESTION 5

A single unit of genetic information located on a chromosome defines:
A.
a trait
B.
an allele
C.
a chromosome
D.
a locus
E.
a gene
QUESTION 6

The physical expression (appearance or function) of an organism's genes defines:
A.
genotype
B.
a single characteristic
C.
physiology
D.
mutation
E.
phenotype
QUESTION 7

Palomino horses (golden color with a blond mane) are an incompletely dominant trait produced by the combination of the chestnut color allele and the cream color allele. If you wanted to produce as many palominos as possible, which mating strategy below would be the best choice?
A.
Chestnut x Cream
B.
Palomino x Cream
C.
Palomino x Chestnut
D.
Palomino x Palomino
QUESTION 8

Which term best describes the effect of a single gene on multiple aspects of the phenotype?
A.
epistasis
B.
pleiotropy
C.
multiple alleles
D.
codominance
E.
polygenic inheritance
QUESTION 9

Which term best describes the separate expression of both alleles for a single trait in the same cell?
A.
multiple alleles
B.
codominance
C.
pleiotropy
D.
epistasis
E.
polygenic inheritance
QUESTION 10

One form of a gene found on a single chromosome defines:
A.
an allele
B.
a locus
C.
a chromosome
D.
a trait
E.
a gene
QUESTION 11

A chocolate lab (whose mother was a yellow lab) is mated with a black lab whose genotype is BbEe. What fraction of the offspring would be expected to be yellow labs?
A.
1/4
B.
none
C.
1/2
D.
3/16
E.
1/8
QUESTION 12

What type of allele is always expressed regardless of whether the individual is homozygous or heterozygous for it?
A.
Both the dominant and recessive alleles
B.
Recessive allele
C.
Allosteric allele
D.
Lethal allele
E.
Dominant allele
QUESTION 13

Given the parents AABBGgHhrr × AabbGgHhRr, assume simple dominance and independent assortment. What proportion of the progeny will be expected to have the genotype AaBbggHHrr?
A.
1/256
B.
1/64
C.
1/16
D.
1/32
E.
1/128
QUESTION 14

___________________ is defined as having two of the same type of allele for a particular trait.
A.
Homozygous
B.
Dominance
C.
Incomplete dominance
D.
Heterozygous
E.
Genotype

QUESTION 15

The physical position of an allele on a single chromosome defines:
A.
an allele
B.
a chromosome
C.
a gene
D.
a locus
E.
a trait
QUESTION 16

Which term best describes two or more genes affecting the phenotype in an additive fashion?
A.
codominance
B.
polygenic inheritance
C.
multiple alleles
D.
pleiotropy
E.
epistasis

Differentiate amongcomplete dominance, incomplete dominance andco-dominance.

3. Understand an allelicseries -How many possible alleles are there for any given gene? Isthere only one recessive allele for a gene? Is there only onedominant allele for a gene? Is an allele always recessive ordominant with respect to other alleles of the gene?

4. What is a lethalallele? Are lethal alleles usually dominant or recessive? Are thereany exceptions? (Hint: Huntington disease in humans). How do wemaintain stocks with lethal alleles?

5. How can you tell if anallele is lethal? If one of the parents has a lethal allele, wouldall the possible genotypes be present in the progeny? What wouldhappen to the phenotypic ratios of the progeny?

6. What ispleiotropy?

7. How can you tell if atrait is determined by more than one gene? What ratios ofphenotypes in the F2 generation would you expect if a trait isdetermined by a single gene?

8. What is epistasis? Howcan the genotype at a locus affect the phenotype determined by thegenotype at another locus? What are complementary gene action,duplicate gene action, dominant suppression, dominant epistasis,and recessive epistasis?

Question 1

What would be the dimensions of a Punnett square for the cross Hh x hh?

4 x 4

2 x 2

2 x 1

1 x 1

Question 2

In dogs, the gene for fur color has two alleles. The dominant allele (G) codes for grey and the recessive allele (g) codes for black fur. The female dog is heterozygous. The male dog is homozygous recessive. Figure out the phenotypes and genotypes possible in their puppies by using a Punnett Square. (provide answers on one line with commas between - xx, xx, xx, xx)

Genotypes: , ,

Phenotypes: ,

Question 3

The fundamental Mendelian process which involves the separation of alleles located at the same spot on the chromosome would be called ___.

segregation

independent assortment

continuous variation

discontinuous variation

Question 4

Using the information given on dominant and recessive traits, state the phenotype for each genotype. Purple flowers are dominant to white flowers in pea plants.

-A.B.C.

PP_____________

-A.B.C.

Pp____________
-A.B.C.

pp_______________
A.

purple flowers
B.

purple flowers
C.

white flowers

Question 5

In dogs, the gene for fur color has two alleles. The dominant allele (G) codes for grey and the recessive allele (g) codes for black fur. The female dog has black fur and the male dog is homozygous dominant. Make a Punnett square to determine the chance of getting each genotype and phenotype below.

-A.B.

Probability of GG:
-A.B.

Probability of Gg:
-A.B.

Probability of gg:
-A.B.

Probability of gray fur:
-A.B.

Probability of black fur:
A.

100
B.

0

Question 6

Using the information given on dominant and recessive traits, state the phenotype for each genotype. Round seeds are dominant to wrinkled seeds in pea plants.

-A.B.C.

RR______________
-A.B.C.

Rr _____________
-A.B.C.

rr ____________
A.

round seeds
B.

wrinkled seeds
C.

round seeds

Question 7

Using the information given on dominant and recessive traits, state the phenotype for each genotype. Hairy knuckles are dominant to non-hairy knuckles in humans.

-A.B.C.

HH_____________
-A.B.C.

Hh ___________
-A.B.C.

hh _________________
A.

non-hairy knuckles
B.

hairy knuckles
C.

hairy knuckles

Question 8

An allele is ___.

one of the bases in DNA

an alternate form of a gene

another term for epistasis

present only in males and is responsible for sex determination

Question 9

In a cross of a round hybrid pea with a true breeding round parent (Rr x RR), what genotypic proportions would be observed in the offspring?

Half heterozygous, half homozygous dominant

Half round, half wrinkled

All heterozygous

All round

Question 10

What would be the dimensions of a Punnett Square depicting a dihybrid cross?

1 x 4

2 x 4

4 x 4

2 x 2

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