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WorksheetsIB Bio SL Genetics (3.1-3.3) Quiz
Total questions: 15
Worksheet time: 15mins
Name
Class
Date
1.
Which of the following is an inherited disease that is due to a base substitution mutation in a gene?
a)
Trisomy 21
b)
Sickle cell anemia
c)
AIDS
d)
Type II Diabetes
2.
Which of the following is the cause of sickle-cell anemia?
a)
Tryptophan is replaced by leucine
b)
Leucine is replaced by valine
c)
Glutamic acid is replaced by valine
d)
Lysine is replaced by glutamic acid
3.
What is the cause of sickle-cell anemia?
a)
A change to the base sequence of a hemoglobin gene
b)
Mosquitos acting as the vector for malaria
c)
Iron deficiency due to the malaria parasite
d)
Production of more white blood cells than red blood cells by bone marrow
4.
A human cell has between 20,000-25,000 genes whereas an E. coli cell has approximately 4,000 genes. Which of the following statements is true?
a)
The human genome is larger than the E. coli genome
b)
There are more genes on each human chromosome than on the E. coli chromosome
c)
The human cell and the E. coli cell produce approximately the same variety of proteins
d)
The DNA in both organisms is associated with histones (proteins)
5.
Which of the following statements about homologous chromosomes is correct?
a)
Each gene is at the same locus on both chromosomes
b)
They are two identical copies of a parent chromosome which are attached to one another at the centromere
c)
They always produce identical phenotypes
d)
They are chromosomes that have identical genes and alleles
6.
What happens in crossing over?
a)
Exchange of genes during metaphase of mitosis
b)
Random distribution of chromosomes during meiosis
c)
Exchange of genetic material between homologous chromosomes
d)
Homologous chromosomes fail to separate during meiosis
7.
A cell in the testis of a male chimpanzee contains 2n=48 chromosomes. It then undergoes meiosis. How many molecules of DNA will be present in the nucleus of the sperm cells just after meiosis?
a)
96
b)
48
c)
24
d)
12
8.
If the haploid number of a species is 14, how many chromatids will there be in metaphase I in a dividing diploid cell?
a)
7
b)
14
c)
28
d)
56
9.
How many autosomes are there in a human sperm?
a)
1
b)
22
c)
23
d)
46
10.
If the amount of DNA in a haploid gamete is represented by X, what is the net quantity of DNA in a cell from the same organism at the start of meiosis?
a)
0.5x
b)
x
c)
2x
d)
4x
11.
In the diagram, which pair represents homologous chromosomes?
a)
1 and 2
b)
3 and 4
c)
2 and 5
d)
4 and 6
12.
Which of the following types of information are needed to construct a karyotype?
I. Size of the chromosomes
II. Gene mutations of the chromosomes
III. Age of the individual
I. Size of the chromosomes
II. Gene mutations of the chromosomes
III. Age of the individual
a)
I only
b)
II only
c)
I and II
d)
I, II and III
13.
Which phase of cell division is photographed in order to make a karyotype?
a)
Anaphase of mitosis
b)
Anaphase I of meiosis
c)
Metaphase of mitosis
d)
Metaphase II of meiosis
14.
What does the karyotype below correspond to?
a)
A normal male
b)
A normal female
c)
A female with Down Syndrome
d)
A male with Down Syndrome
15.
What can be concluded from the karyotype provided below?
a)
There was non-disjunction during meiosis in the mother.
b)
There was non-disjunction during meiosis in the father.
c)
The fetus is male.
d)
The fetus is female.
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