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WorksheetsBiology 3.1 - 3.3
Total questions: 15
Worksheet time: 12mins
Name
Class
Date
1.
A segment of DNA that codes for a trait
a)
gene
b)
allele
c)
chromosome
d)
chromatid
2.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
3.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
4.
Which best describes the process shown?
a)
mutation in which the DNA content of the gene is ltered
b)
segregation of sister chromatids
c)
condensation and segregation of the alleles
d)
crossing-over which alleles are exchanged
5.
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
6.
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
7.
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
8.
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
9.
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.
10.
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)
11.
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
12.
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
13.
Another word for the diploid cell created during fertilization is
a)
Zygote
b)
Embry
c)
Zenome
d)
xygote
14.
A genome is
a)
the entirety of the genetic information in an organism
b)
a section of the chromosome that codes for sex
c)
another word for a gene
d)
the same type of gene that codes for a different characteristic
15.
An allele is
a)
an African dictator that has been charged with war crimes
b)
a heritable factor that influences a certain characteristic consisting of a length of DNA, found on chromosomes
c)
the same type of gene that codes for a different characteristic.
d)
the entirety of the genetic information in an organism
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