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Exam 4 Review 2020

Total questions: 65

Worksheet time: 3615secs

Name
Class
Date
1.

Chromosomes are made up of two identical sister _____________.

a)

chloroplasts

b)

nuclei

c)

chromatids

d)

genes

2.
There are a TOTAL of ___ chromosomes in human body cells.
a)
23
b)
46
c)
92
d)
scientists don't know
3.
Sister chromatids are joined together at the ___________.
a)
equator
b)
chromosome
c)
centromere
d)
ends
4.
What does DNA stand for?
a)
DeNatured Acid
b)
DomiNant Acid
c)
DeoxyriboNucleic Acid
d)
DiriboNucleic Acid
5.
Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have ...
a)
16 chromosomes.
b)
46 chromosomes.
c)
8 chromosomes.
d)
4 chromosomes.
6.
Structure B is pointing to the _____. 
a)
chromosome
b)
centromere
c)
DNA
d)
chromatid
7.

How many chromosomes are normally found in human body cells?

a)

46

b)

23

c)

26

d)

44

8.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
9.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
10.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
11.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
12.

having two of the same alleles for the trait (sometimes called purebred).

a)

homozygous

b)

hetrozygous

c)

protein

d)

chromosome

13.

having two different alleles for a trait (sometimes called hybrid).

a)

protein

b)

homozygous

c)

heterozygous

d)

genotype

14.
A single cross such as flower color.
a)
mono hybrid
b)
dihybrid
c)
crossing over
d)
homozygous
15.
What type of "square" helps us solve genetic problems?
a)
carpenter square
b)
Mendel square
c)
Punnett square
d)
genetic square
16.
TT,tt,PP,pp,SS,ss are examples of alleles that are?
a)
homozygous
b)
heterozygous
c)
different
d)
homologous 
17.
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
18.
Females-XX; MalesXY.  A couple has 4 girls.  What is the chance the next child will be a boy?
a)
75%
b)
100%
c)
25%
d)
50%
19.
If "T" is the allele for tall and "t" is the allele for short, then Tt would produce?
a)
tall
b)
short
c)
medium
d)
not enough info
20.
How many pairs of chromosomes exist in each of your cells?
a)
10
b)
12
c)
23
d)
46
21.
Put in order smallest to largest:
a)
Chromosome - DNA - Gene
b)
Gene - DNA - Chromosome 
c)
DNA - Gene  Chromosome
d)
Chromosome - Gene  - DNA
22.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
23.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
24.
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
25.
What type of inheritance do two alleles have if their traits blend together? 
a)
Incomplete Dominance
b)
Co-Dominance
26.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
27.
This is an example of ___________.
a)
 Incomplete Dominance
b)
 Codominance
28.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
29.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
30.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
31.
If you cross a black chicken with a white chicken, only checkered chickens would be produced.  What kind of inheritance pattern does this follow?
a)
incomplete Dominance
b)
Co-Dominance
32.
In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb).  
What is the genotype ratio for a cross between a grey fowl and a white fowl?
a)
2 BB: 2 Bb: 0 bb
b)
0 BB: 4 Bb: 0 bb
c)
0 BB: 2 Bb: 2 b
d)
1 BB: 2 Bb: 1 bb
33.
In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb).  
Cross a black fowl with a white fowl. What is the phenotype ratio?
a)
4 black: 0 grey: 0 white
b)
2 black: 2 grey: 0 white
c)
0 black: 4 grey: 0 white
d)
0 black: 2 grey: 2 white
34.

A long-haired female rabbit and a short-haired male rabbit produced this offspring with a medium-length coat:

a)

Incomplete dominance

b)

Codominance

c)

Complete dominance

35.

The 5th pair of human chromosomes contains about 923 genes. Each one of the chromosomes in this pair has genes for the same traits. We say that chromosomes in the same pair are __________________

a)

Homozygous

b)

Hemizygous

c)

Homologous

d)

Homogeneous

36.
Which of the following combinations of sex chromosomes represent a female?
a)
XY
b)
XXY
c)
XX
37.

a photograph or picture of chromosomes grouped in ordered pairs is a ______________

a)

pedigree

b)

Punnett Square

c)

Venn Diagram

d)

Karyotype

38.
The results of the karyotype indicate that an individual has 3 chromosome #21. Which of the following genetic disorders do they have?
a)
Edwards Syndrome
b)
Patau's Syndrome
c)
Down's Syndrome
d)
Klinefelter's Syndrome
39.
Which of the following would be considered a Gamete cell?
a)
Egg Cell
b)
Sperm Cell
c)
Both of these
d)
None of these
40.

If the Diploid number for carrots is 18, the haploid number is

a)

18

b)

9

c)

27

d)

36

41.

What is the diploid number of chromosomes for a bat if the sperm cell has 22 chromosomes?

a)

22

b)

11

c)

44

d)

21

42.

Punnett squares DO NOT show

a)

the actual results of a genetic cross

b)

possible genotypes of offspring

c)

alleles in parent gametes

d)

hypothetical ratios of genotypes

43.

How many possible gametes can be made from RrYy

a)

1

b)

2

c)

3

d)

4

44.

How many possible gametes can be made from RrYY

a)

1

b)

2

c)

3

d)

4

45.

If a red and a white flower make a pink flower, it is likely because of

a)

dominant and recessive alleles

b)

codominance

c)

incomplete dominance

d)

someone painting them pink

46.

If a red and a white flower make a white and red spotted flower, it is likely because of

a)

dominant and recessive alleles

b)

codominance

c)

incomplete dominance

d)

bees making art

47.

The human diploid number is 46. What is the haploid number?

a)

2

b)

23

c)

46

d)

92

48.

A fruit fly's haploid number is 4, what is its diploid number

a)

2

b)

4

c)

6

d)

8

49.

Can 2 organisms have the same phenotype but different genotypes?

a)

Yes

b)

No

c)

Maybe

d)

I don't know

50.

If you have two identical alleles for a trait, you are

a)

a hybrid

b)

homozygous

c)

heterozygous

d)

an enigma

51.

If you have two different alleles for a trait, you are

a)

weird

b)

homozygous

c)

heterozygous

d)

an enigma

52.

Skin cells are produced by the process of

a)

meiosis

b)

mitosis

c)

crossing-over

d)

replication

53.

Mitosis results in

a)

identical diploid cells

b)

identical haploid cells

c)

different diploid cells

d)

different haploid cells

54.

Which of the following is NOT part of a nucleotide

a)

sugar

b)

nitrogen base

c)

amino acid

d)

phosphate group

55.

Which of the following is NOT a nitrogen base found in DNA?

a)

guanine

b)

cytosine

c)

thymine

d)

uracil

56.

Which of the following is NOT a nitrogen base found in RNA?

a)

guanine

b)

cytosine

c)

thymine

d)

uracil

57.

how many nitrogen bases in one codon?

a)

1

b)

2

c)

3

d)

4

58.

how many codons for 1 amino acid?

a)

1

b)

2

c)

3

d)

4

59.

DNA is found in the

a)

cytoplasm

b)

Golgi apparatus

c)

nucleus

d)

plasma membrane

60.

DNA contains the sugar

a)

deoxyribose

b)

oxyribose

c)

ribose

d)

glucose

61.

RNA contains the sugar

a)

deoxyribose

b)

oxyribose

c)

ribose

d)

glucose

62.

What is this used for?

a)

to decode the genetic code of mRNA

b)

to create intelligent beings

c)

to make anitcodons

d)

to splice mRNA

63.

Different versions of a gene are

a)

nucleotides

b)

alleles

c)

codons

d)

hybrids

64.

How many recessive alleles will you need to express a recessive trait?

a)

0

b)

1

c)

2

d)

4

65.

How many dominant alleles will you need to express a dominant trait?

a)

0

b)

1

c)

2

d)

4

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