Activities Quiz

Chapter 14: Mendel and the Gene Idea

Activities Quiz

1 .

The result of the following cross indicates the orange eyes are _____ black eyes. (Activity: Monohybrid Cross)

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: Monohybrid Cross)

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: Monohybrid Cross)

3 black : 1 orange

1 black : 3 orange

0 black : 1 orange

1 black : 1 orange

1 black : 0 orange

4 .

The result of the following cross indicates that the genotype of the female parent is _____. (Activity: Monohybrid Cross)

bb

BB

Bb

b

B

5 .

The result of the following cross indicates that the genotype of the male parent is _____. (Activity: Monohybrid Cross)

bb

BB

Bb

b

B

6 .

The result of the following cross indicates that genotypically the offspring _____. (Activity: Monohybrid Cross)

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: Monohybrid Cross)

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: Monohybrid Cross)

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: Dihybrid Cross)

OoWw

ooWW

ooWw

OOWW

ooww

10 .

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: Dihybrid Cross)

1 black 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.

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: Dihybrid Cross)

ooww

OOWW

OOww

ooWW

OoWw

12 .

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: Dihybrid Cross)

test

difficult

dihybrid

trihybrid

monohybrid

14 .

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

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: Dihybrid Cross)

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: Dihybrid Cross)

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

1 black 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: Dihybrid Cross)

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: Dihybrid Cross)

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: Dihybrid Cross)

1 A : 1 B

3 A : 1 B

3 AB : 1 ab

1 AB : 1 aB

3 AA : 1 BB

20 .

Mendel worked _____. (Activity: Gregor's Garden)

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 C^BC^B are black, those with the genotype C^WC^W are white, and those with the genotype C^BC^W are gray. What is the relationship between the C^B and C^W alleles? (Activity: Incomplete Dominance)

C^B is dominant to C^W

C^B is recessive to C^W

C^W is dominant to C^B

The relationship between the alleles is one of incomplete dominance.

C^B and C^W are co-dominant

22 .

Andalusian chickens with the genotype C^BC^B are black, those with the genotype C^WC^W are white, and those with the genotype C^BC^W are gray. What is the expected phenotypic ratio of a C^BC^W x C^BC^W cross? (Activity: Incomplete Dominance)

1 black : 1 white

3 black : 1 white

1 black : 2 gray : 1 white

3 gray : 1 white

1 black : 1 gray

23 .

Andalusian chickens with the genotype C^BC^B are black, those with the genotype C^WC^W are white, and those with the genotype C^BC^W are gray. What is the expected genotypic ratio of a C^BC^W x C^BC^W cross? (Activity: Incomplete Dominance)

1 C^BC^B : 1 C^BC^W

3 C^BC^B : 1 C^WC^W

1 C^BC^B : 2 C^BC^W : 1 C^WC^W

2 C^BC^B : 1 C^BC^W : 2 C^WC^W

9 C^BC^B : 3 C^BC^W : 3 C^WC^B : 1 C^WC^W

24 .

Andalusian chickens with the genotype C^BC^B are black, those with the genotype C^WC^W are white, and those with the genotype C^BC^W are gray. What is the expected genotypic ratio of a C^BC^B x C^BC^W cross? (Activity: Incomplete Dominance)

1 C^BC^B : 1 C^BC^W

3 C^BC^B : 1 C^WC^W

1 C^BC^B : 2 C^BC^W : 1 C^WC^W

2 C^BC^B : 1 C^BC^W : 2 C^WC^W

9 C^BC^B : 3 C^BC^W : 3 C^WC^B : 1 C^WC^W

25 .

Andalusian chickens with the genotype C^BC^B are black, those with the genotype C^WC^W are white, and those with the genotype C^BC^W are gray. What is the expected phenotypic ratio of a C^BC^B x C^BC^W cross? (Activity: Incomplete Dominance)

1 black : 1 white

3 black : 1 white

1 black : 2 gray : 1 white

3 gray : 1 white

1 black : 1 gray