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BIO 101 Lab 8 - Genetics Hybrid Fall 2020

Total questions: 46

Worksheet time: 4hrs 50mins

Name
Class
Date
1.

____________ is the study of heredity.

a)

genetics

b)

biology

c)

ecology

d)

statistics

2.

_______________, the unit of inheritance, are located on chromosomes.

a)

chromosomes

b)

alleles

c)

traits

d)

genes

3.

How many chromosomes does a human have?

a)

12

b)

23

c)

46

d)

92

4.

How many chromosomes do you get from your mother?

a)

12

b)

18

c)

23

d)

46

5.

How many chromosomes do you get from your father?

a)

12

b)

18

c)

23

d)

46

6.

The different versions of genes are called ____________; each individual inherits two ___________ for a trait (one from each parent).

a)

genes

b)

alleles

c)

homozygote

d)

heteroygote

7.

____________________ refers to the physical characteristic (that you “see”), such as tall, green, or wrinkled.

a)

phenotype

b)

genotype

8.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
9.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
10.
Which of the following is heterozygous
a)
Ww
b)
ii
c)
DD
d)
kk
11.
Which of the following is homozygous dominant?
a)
Jj
b)
Rr
c)
MM
d)
ee
12.
How many letters does a genotype contain?
a)
1
b)
2
c)
3
d)
4
13.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
14.
The two-letter code that describes the genetic traits of an organism is called a-
a)
Phenotype
b)
Genotype
c)
Physical Appearance
d)
Intelligence
15.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
16.

Which of the following is homozygous dominant?

a)

rr

b)

AA

c)

Tt

d)

Ff

17.

What is the relationship between phenotype and genotype?

a)

The phenotype determines the genotype.

b)

The genotype determines the phenotype.

c)

There is no relationship between phenotype and genotype.

18.

____________________ means the two alleles are the same (“PP” or “pp”)

a)

Homozygous

b)

Heterozygous

19.

__________________________ means the two alleles are different (“Pp”)

a)

Homozygous

b)

Heterozygous

20.

Some traits demonstrate _____________________________, in which one allele, the dominant allele, completely masks the other, recessive allele.

a)

Complete dominance

b)

Incomplete dominance

c)

Co-dominance

d)

Pleiotrophy

21.

___________________ trait - the trait is expressed - represented by a capital letter

a)

Dominant

b)

Recessive

22.

___________________ trait - the trait is masked (if a capital letter is in the genotype) - represented by a lowercase letter; It takes two of them for the trait to be expressed

a)

Dominant

b)

Recessive

23.

Brown eyes (B) are dominant over blue eyes (b). What is the genotype of a person who is homozygous dominant for brown eyes?

a)

BB

b)

Bb

c)

bb

d)

brown eyes

e)

blue eyes

24.

Brown eyes (B) are dominant over blue eyes (b). What is the genotype of a person who has blue eyes?

a)

BB

b)

Bb

c)

bb

d)

brown eyes

e)

blue eyes

25.

Brown eyes (B) are dominant over blue eyes (b). What is the genotype of a person who is heterozygous for eye color?

a)

BB

b)

Bb

c)

bb

d)

brown eyes

e)

blue eyes

26.
A single cross such as flower color.
a)
mono hybrid
b)
dihybrid
c)
crossing over
d)
homozygous
27.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
28.
Y for yellow body is dominant over y for blue body.  What alleles would produce yellow bodies?
a)
YY,yy
b)
Yy,yy
c)
YY only
d)
YY,Yy
29.

When Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt), all of the offspring were tall because...

a)

The allele for tall plants is recessive.

b)

The allele for short plants is dominant.

c)

The allele for tall plants is dominant

30.

Is a cross between two different lines/genes that differ in two observed traits.

a)

Punnett square

b)

Phenotype

c)

Dominant

d)

Recessive

e)

Dihybrid cross

31.

Which of the following is a genetic cross between two purebred pea plants (known as a TEST CROSS)?

a)

Tt x Tt

b)

Tt x tt

c)

TT x tt

d)

None of the answers are correct

32.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
33.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
34.

Calculate the % green for the class data.

a)

0.75%

b)

75%

c)

0.80%

d)

80%

35.

Calculate the expected number for purple, smooth peas. Remember: Expected # = (phenotypic ratio x total kernels observed)

a)

34.3

b)

11.4

c)

102.9

d)

98

36.

Calculate the expected number for purple, wrinkled peas. Remember: Expected # = (phenotypic ratio x total kernels observed)

a)

34.3

b)

11.4

c)

102.9

d)

98

37.

Calculate the expected number for yellow, smooth peas. Remember: Expected # = (phenotypic ratio x total kernels observed)

a)

34.3

b)

11.4

c)

102.9

d)

98

38.

Calculate the expected number for yellow, wrinkled peas. Remember: Expected # = (phenotypic ratio x total kernels observed)

a)

34.3

b)

11.4

c)

102.9

d)

98

39.

The ability to taste the chemical PTC is determined by a single gene in humans with the ability to taste given by the dominant allele T and inability to taste by the recessive allele t. Suppose two heterozygous tasters (Tt) have a large family.

Predict the proportion of their children who will be tasters and nontasters. Use a Punnett square to illustrate how you make these predictions.

a)

1:2:1 or 25%:50%:25%

b)

1:1 or 50%:50%

c)

3:1 or 75%:25%

d)

1:3 or 25%:75%

40.

A rooster with grey feathers is mated with a hen of the same phenotype. Among their offspring 15

chicks are grey (Gg), 6 are black (GG) and 8 are white (gg). What is the simplest explanation for the inheritance of these colors in chickens? What kind of inheritance is shown in this problem? What are both parents genotypes? Use 2 answers!

a)

complete dominance

b)

incomplete dominance

c)

GG

d)

Gg

e)

gg

41.

In a certain plant, blue (B) flower color is dominant to white (b). You have a blue flowered plant and a white flowered plant. What are the two possibilities for genotype of the blue flower?

a)

BB

b)

Bb

c)

bb

42.

In a certain plant, blue (B) flower color is dominant to white (b). You have a blue flowered plant and a white flowered plant. What is the genotype of the white flower?

a)

BB

b)

Bb

c)

bb

43.

In a certain plant, blue (B) flower color is dominant to white (b). You have a blue flowered plant and a white flowered plant. Now you cross the plants and all the offspring are blue. What are the genotypes for both parents? Choose 2 answers!

a)

GG

b)

Gg

c)

gg

44.

In pepper plants, green (G) fruit color is dominant to red (g) and round (R) fruit shape is dominant to square (r) fruit shape. These two genes are located on different chromosomes. What gamete types will be produced by a heterozygous green, round plant (GgRr)? Remember: Use F.O.I.L to determine the gamete types

a)

GR

b)

Gr

c)

gR

d)

gr

e)

rr

45.

In pepper plants, green (G) fruit color is dominant to red (g) and round (R) fruit shape is dominant to square (r) fruit shape. These two genes are located on different chromosomes. If two heterozygous plants are crossed (GgRr), what is the phenotypic ratio produced? First, figure out the parents genotypes. Figure out the gametes. Put gametes in punnett square

a)

4:4:4:4

b)

6:2:6:2

c)

2:6:2:6

d)

9:3:3:1

46.

Hemophilia is a sex-linked trait where XH gives normal blood clotting and is dominant to the hemophilia allele Xh. A woman with normal blood clotting whose father had hemophilia and a normal man had children. What is the possibility that a mating between these two individuals will produce a child, regardless of sex, that has hemophilia?

a)

25%

b)

50%

c)

75%

d)

100%