Activities Quiz
1.  

The result of the following cross indicates the orange eyes are _____ black eyes. (Activity 14A)

question #1

incompletely dominant to
recessive to
co-dominant to
dominant to
larger than


2.  

If O represents the allele for black eyes (dominant) and o represents the allele for orange eyes (recessive), what would be the genotypic ratio of a cross between a heterozygous black-eyed MendAlien and an orange-eyed MendAlien? (Activity 14A)

1 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous orange (oo)
2 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous orange (oo)
1 homozygous black (OO): 0 heterozygote (black) (Oo): 1 homozygous orange (oo)
0 homozygous black (OO): 1 heterozygote (black) (Oo): 1 homozygous orange (oo)
0 homozygous black (OO): 0 heterozygote (black) (Oo): 1 homozygous orange (oo)


3.  

If O represents the allele for black eyes (dominant) and o represents the allele for orange eyes (recessive), what would be the phenotypic ratio of a cross between a heterozygous black-eyed MendAlien and an orange-eyed MendAlien? (Activity 14A)

3 black : 1 orange
1 black : 3 orange
0 black : 1 orange
1black : 1 orange
1 black : 0 orange


4.  

The result of the following cross indicates that the genotype of the female parent is _____. (Activity 14A)

question #4

bb
BB
Bb
b
B


5.  

The result of the following cross indicates that the genotype of the male parent is _____. (Activity 14A)

question #5

bb
BB
Bb
b
B


6.  

The result of the following cross indicates that genotypically the offspring _____. (Activity 14A)

question #6

are all bb
are all BB
are all Bb
exhibit a 3 BB : 1 bb ratio
exhibit a 1 BB : 2 Bb : 1 bb ratio


7.  

Which of these is a testcross? (Activity 14A)

A? x aa
A? x AA
A? x Aa
A? x A?
aa x aa


8.  

That each gamete contains a single allele of the eye color gene is an illustration of _____. (Activity 14A)

question #8

Beadle and Tatum's one gene­one enzyme hypothesis
Mendel's law of segregation only
Darwin's theory of natural selection
Mendel's law of independent assortment only
Both Mendel's law of segregation and Mendel's law of independent assortment.


9.  

What is the genotype of the parent with orange eyes and white skin? (Note: orange eyes are recessive.) (Activity 14B)

question #9

OoWw
ooWW
ooWw
OOWW
ooww


10.  

What is the genotype of the offspring? (Activity 14B)

question #10

OoWw
ooWW
ooWw
OOWW
ooww


11.  

In order to determine the genotype of a MendAlien with black eyes and green skin, you would cross this individual with a(n) _____ individual. (Activity 14B)

ooww
OOWW
OOww
ooWW
OoWw


12.  

Black eyes are dominant to orange eyes, and green skin is dominant to white skin. Sam, a MendAlien with black eyes and green skin, has a parent with orange eyes and white skin. Carole is a MendAlien with orange eyes and white skin. If Sam and Carole were to mate, the predicted phenotypic ratio of their offspring would be _____. (Activity 14B)

1black eyes, green skin : 1 black eyes, white skin : 1 orange eyes, green skin : 1 orange eyes, white skin
3 black eyes, green skin : 3 black eyes, white skin : 9 orange eyes, green skin : 1 orange eyes, white skin
1 black eyes, green skin : 3 black eyes, white skin : 3 orange eyes, green skin : 9 orange eyes, white skin
9 black eyes, green skin : 3 black eyes, white skin : 3 orange eyes, green skin : 1 orange eyes, white skin
There is insufficient information to determine Sam's genotype.


13.  

A cross between an individual with orange eyes and green skin and an individual with black eyes and white skin is an example of a _____ cross. (Activity 14B)

test
difficult
dihybrid
trihybrid
monohybrid


14.  

A phenotypic ratio of 9:3:3:1 in the offspring of a cross indicates that _____. (Activity 14B)

one parent is homozygous dominant and one parent is homozygous recessive
one parent is heterozygous and one parent is homozygous recessive
one parent is homozygous dominant and one parent is heterozygous
both parents are heterozygous for both genes
both parents are homozygous dominant


15.  

The observed distribution of alleles into gametes is an illustration of _____. (Activity 14B)

question #15

Mendel's law of segregation only
Thienemann's rule
Eimer's principle
Mendel's law of independent assortment only
Mendel's laws of segregation and independent assortment


16.  

An individual heterozygous for eye color, skin color, and number of eyes mates with an individual who is homozygous recessive for all three characters; what would be the expected phenotypic ratio of their offspring? [Hint: O = black eyes, o = orange eyes; W = green skin, w = white skin; C = two eyes, c = one eye] (Activity 14B)

9 black eyes, green skin, two eyes : 3 black eyes, green skin, one eye : 3 black eyes, white skin, two eyes : 1 black eyes, white skin, one eye : 9 orange eyes, green skin, two eyes : 3 orange eyes, green skin, one eye : 3 orange eyes, white skin, two eyes : 1 orange eyes, white skin, one eye
9 black eyes, green skin, two eyes : 3 black eyes, green skin, one eye : 3 black eyes, white skin, two eyes : 1 black eyes, white skin, one eye
1 black eyes, green skin, two eyes : 1 black eyes, green skin, one eye : 1 black eyes, white skin, two eyes : 1 orange eyes, green skin, two eyes : 1 orange eyes, white skin, two eyes : 1 orange eyes, white skin, one eye
1black eyes, green skin, two eyes : 1 black eyes, green skin, one eye : 1 black eyes, white skin, two eyes : 1 black eyes, white skin, one eye : 1 orange eyes, green skin, two eyes : 1 orange eyes, green skin, one eye : 1 orange eyes, white skin, two eyes : 1 orange eyes, white skin, one eye
9 orange eyes, green skin, two eyes : 9 orange eyes, green skin, one eye : 9 orange eyes, white skin, two eyes : 1 orange eyes, white skin, one eye


17.  

A OoWw x ooww cross yields a phenotypic ratio of approximately 5 black eyes, green skin : 5 orange eyes, white skin : 1 black eyes, white skin : 1 orange eyes, green skin. Which of the following best explains these results? (Activity 14B)

Mendel's law of independent assortment is being violated.
Mendel's law of segregation is being violated.
The genes for eye color and skin color are co-dominant.
The heterozygous individual is male, and the homozygous individual is female.
Mendel's laws of segregation and independent assortment are being violated.


18.  

In the following cross the genotype of the female parent is OoWw. What is the genotype of the male parent? [Hint: O = black eyes, o = orange eyes, W = green skin, w = white skin] (Activity 14B)

question #18

OoWw
OOWW
OOWw
OoWW
ooWW


19.  

In a situation in which genes assort independently, what is the ratio of the gametes produced by an AaBB individual? (Activity 14B)

1 A : 1 B
3 A : 1 B
3 AB : 1 ab
1AB : 1 aB
3 AA : 1 BB


20.  

Mendel worked _____. (Activity 14C)

on the Human Genome Project
with fruit flies
on problems involving characters that were inherited together more often than expected by chance
on gene mapping
in a monastery


21.  

Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are white, and those with the genotype CBCW are gray. What is the relationship between the CB and CW alleles? (Activity 14D)

CB is dominant to CW
CB is recessive to CW
CW is dominant to CB
The relationship between the alleles is one of incomplete dominance.
CB and CW are co-dominant


22.  

Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are white, and those with the genotype CBCW are gray. What is the expected phenotypic ratio of a CBCW x CBCW cross? (Activity 14D)

1 black : 1 white
3 black : 1 white
1black : 2 gray : 1 white
3 gray : 1 white
1 black : 1 gray


23.  

Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are white, and those with the genotype CBCW are gray. What is the expected genotypic ratio of a CBCW x CBCW cross? (Activity 14D)

1 CBCB : 1 CBCW
3 CBCB : 1 CWCW
1CBCB : 2 CBCW : 1 CWCW
2 CBCB : 1 CBCW : 2 CWCW
9 CBCB : 3 CBCW : 3 CWCB : 1 CWCW


24.  

Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are white, and those with the genotype CBCW are gray. What is the expected genotypic ratio of a CBCB x CBCW cross? (Activity 14D)

1CBCB : 1 CBCW
3 CBCB : 1 CWCW
1 CBCB : 2 CBCW : 1 CWCW
2 CBCB : 1 CBCW : 2 CWCW
9 CBCB : 3 CBCW : 3 CWCB : 1 CWCW


25.  

Andalusian chickens with the genotype CBCB are black, those with the genotype CWCW are white, and those with the genotype CBCW are gray. What is the expected phenotypic ratio of a CBCB x CBCW cross? (Activity 14D)

1 black : 1 white
3 black : 1 white
1 black : 2 gray : 1 white
3 gray : 1 white
1black : 1 gray

   



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