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WorksheetsUnit 2 Exam
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
The genetic make up is the _______
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
2.
What has happened to this chromosome?
a)
Substitution
b)
Inversion
c)
Duplication
d)
Deletion
3.
In cats, the diploid # of chromosomes is 38. How many chromosomes are found in haploid cells?
a)
76
b)
38
c)
83
d)
19
4.
An extra chromosome on a gene results in a condition called
a)
Monosomy
b)
Quadosomy
c)
Deuterosomy
d)
Trisomy
5.
What type of mutation results in a mutated codon that codes for a different amino acid?
a)
Insertion
b)
Nonsense
c)
Missense
d)
Silent
6.
Which of the following is NOT a difference between mitosis and meiosis?
a)
2 vs 4 daughter cells
b)
DNA is not replicated before meiosis
c)
Separation of Homologous pairs
d)
Diploid vs Haploid products
7.
Assuming both parents in the pedigree below are homozygous, what would be the genotypes of the f1 generation?
a)
Yy
b)
YY
c)
yy
8.
The above Punnett square shows a cross between a red flower and a white flower. If this is a case of codominance, what will be the phenotypes of the offspring?
a)
Red and white spotted
b)
Pink
c)
Red
d)
White
9.
Which of the following is NOT a reason that your body would undergo mitosis?
a)
Create gametes
b)
Replace dead or damaged cells
c)
Growth
d)
Replace old or dying cells
10.
If a plant with red flowers is crossed with a plant with white flowers and the resulting offspring are pink, it is known as
a)
Co-dominance
b)
Polygenic traits
c)
Incomplete dominance
d)
Dihybrid traits
11.
In foxes, brown fur (B) is dominant to white fur (b). If a homozygous brown fox is crossed with a white fox, what is the probability that the offspring will be white?
a)
100%
b)
50%
c)
0%
d)
25%
12.
During which phase of the cell cycle does DNA replicate?
a)
G1
b)
Anaphase
c)
Metaphase
d)
Synthesis
13.
Having two identical alleles for a trait (HH or hh) is said to be
a)
Heterozygous
b)
Homozygous
c)
Genotypic
d)
Phenotypic
14.
If an animal has 24 chromosomes in its liver cells, then how many chromosomes are found in its skin cells?
a)
12
b)
24
c)
48
d)
42
15.
If a diploid cell has 16 chromosomes, then, after mitosis, how many chromosomes will each of the daughter cells have?
a)
8
b)
32
c)
16
d)
64
16.
The above image is a karyotype depicting
a)
Male
b)
Male with down syndrome
c)
Female
d)
Female with down syndrome
17.
Which of these is the correct order of the process of Protein Synthesis.
a)
Transcription, mRNA moves to the ribosome, translation, amino acids folds to form protein
b)
Transcription, Translation, mRNA moves to the ribosome, amino acid folds to form protein
c)
Translation, mRNA moves to the ribosome, Transcription, amino acid folds to form protein
d)
amino acid folds to form protein, Transcription, Translation, mRNA moves to the ribosome
18.
The end product of protein synthesis is?
a)
1 new strand of DNA
b)
2 new strands of DNA
c)
Protein
d)
1 new strand of RNA
19.
If a person has a trisomy disease, such as Down syndrome, how many total chromosomes will be in each of their cells.
a)
48
b)
46
c)
45
d)
47
20.
Hitchhikers thumb is a recessive trait. Can two parents that are homozygous recessive have a child with a straight thumb?
a)
No, they do not carry the allele for straight thumbs
b)
Yes, they are homozygous for that trait
c)
Yes, being homozygous means they have both traits
21.
What are the possible parents?
a)
Hh, Hh
b)
Hh, HH
c)
HH, hh
d)
HH, HH
22.
When mRNA is being translated into amino acids during protein synthesis, the sequence is being read in codons. What is a codon? How many combinations are there?
a)
3 sugars, 64 combinations
b)
3 bases, 64 combinations
c)
3 bases, 20 combinations
d)
3 sugars, 20 combinations
23.
What is the end product of DNA Replication?
a)
Protein
b)
amino acid chain
c)
1 new strand of RNA
d)
2 new strands of DNA
24.
Long chains of amino acids connected by peptide bonds make?
a)
DNA
b)
Fat
c)
Proteins
d)
Necklaces
25.
What does a nucleotide consist of?
a)
Phosphate, sugar, acid
b)
Phosphate, water, base
c)
Phosphate, oxygen, water
d)
Phosphate, sugar, base
26.
Mitosis is where cells make new cells. What kinda of cells are being made?
a)
Somatic
b)
Gametes
c)
Sex cells
d)
Blood cells only
27.
During protein synthesis, the process of transcription occurs in the ____________ of the cell.
a)
Cell
b)
Ribosome
c)
Cytoplasm
d)
Nucleus
28.
What sugar can be found in RNA
a)
Deoxyribose
b)
Glucose
c)
Deoxose
d)
Ribose
29.
Which of the following would be a nucleotide found in DNA?
a)
Phosphate, ribose, thymine
b)
Phosphate, deoxyribose, cytosine
c)
Phosphate, deoxyribose, uracil
d)
Phosphate, ribose, uracil
30.
In which process are gametes produced?
a)
Mitosis
b)
Osmosis
c)
Meiosis
d)
Protein synthesis
31.
What is the process in meiosis where genes exchange creating more genetic variation?
a)
germ cell assortment
b)
crossing over
c)
independent assortment
d)
replication bubble
32.
Which of these is NOT part of a nucleotide?
a)
amino acid
b)
sugar
c)
phosphate
d)
base
33.
In RNA what does Guanine pair with?
a)
Uracil
b)
Adenine
c)
Cytosine
d)
Thymine
34.
Which of these is true for RNA but not DNA?
a)
Can leave the nucleus
b)
Single stranded
c)
Has uracil as a base
d)
All of these
35.
Name the process where the codon matches with the amino acid
a)
Transcription
b)
Replication
c)
Translation
d)
Transformation
36.
The physical features are referred to as the ________
a)
Gentotype
b)
Homozygotic
c)
Phenotype
d)
Heterozygoti
37.
Where does the process of translation take place?
a)
Nucleus
b)
Ribosome in cytoplasm
c)
Vacuole
d)
Outside
38.
The Mendelian principle that states that genes for different traits can segregate independently during gamete formation is known as ______________
a)
Incomplete dominance
b)
Independent assortment
c)
Cross dominance
d)
Polygenic traits
39.
What is the probability that a pea will be yellow?
a)
100%
b)
50%
c)
75%
d)
25%
40.
What shape in a pedigree stands for a female
a)
Star
b)
Circle
c)
Square
d)
Diamond
41.
Having alleles for both traits is called _____________.
a)
Phenotypic
b)
Genotypic
c)
Homozygous
d)
Heterozygous
42.
In which phase of mitosis do chromosomes line up in the middle of the cell?
a)
Metaphase
b)
Anaphase
c)
Prophase
d)
Telophase
43.
Since the chromosomes are all replicated during Interphase, when the cell first starts mitosis there are _____ chromosomes in a human cell
a)
46
b)
92
c)
23
d)
42
44.
What type of mutation occurs that stops the process of translation?
a)
Deletion
b)
Missense
c)
Silent
d)
Nonsense
45.
In DNA what does cytosine pair with?
a)
Uracail
b)
Guanine
c)
Thymine
d)
Adenine
46.
The base that changes in DNA is _________ instead you can find _________ in RNA
a)
Adenine, Uracil
b)
Thymine, Uracil
c)
Uracil, Thymine
d)
Cytosine, Uracil
47.
The above image is a karyotype depicting
a)
Male
b)
Female
c)
Male with Down Syndrome
d)
Female with Down Syndrome
48.
What happened to this chromosome?
a)
Inversion
b)
Deletion
c)
Duplication
d)
Substitution
49.
What is the phenotypic ratio of of this cross?
a)
9:3:3:1
b)
9:3:1
c)
12:4
d)
12:2:2
50.
How many female are affected with trait?
a)
9
b)
2
c)
7
d)
3
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