WorksheetsSB015 Topic 4-6 Quiz Set B
Total questions: 17
Worksheet time: 9mins
Name
Class
Date
1.
An alternative form of a gene that may produce distinct phenotypic effects is known as
a)
allele
b)
locus
c)
genotype
d)
phenotype
2.
What is meant by locus?
a)
The set of alleles of an organism
b)
A position of an allele on a chromosome
c)
The observable physical traits of an organism
d)
An alternative form of a gene that occupies the same locus on a pair of homologous chromosomes
3.
Which of the following genotypes is homozygous dominant?
a)
Option 1
b)
Option 2
c)
Option 3
d)
Option 4
4.
A cross between an individual with the dominant phenotype, but unknown genotype, with an individual with recessive phenotype is
a)
Self-cross
b)
Test cross
c)
Back cross
d)
Reciprocal cross
5.
In pea plant, purple flower is dominant over white flower. A monohybrid cross between two purple flower heterozygous plants produces F1 generation with phenotypic ratio of
a)
all purple flower.
b)
all white flower.
c)
1 purple flower : 1 white flower.
d)
3 purple flower : 1 white flower.
6.
Which of the following are true-bred genotype?
a)
I and II only
b)
I and III only
c)
II and III only
d)
I, II and III
7.
State the genotype that would result from the crossing between RR x Rr
a)
I and II only
b)
I and III only
c)
II and III only
d)
I, II and III
8.
p2 in Hardy-Weinberg equation indicates individuals
a)
that are heterozygous
b)
having a lethal allele
c)
that are homozygous dominant
d)
that are homozygous recessive
9.
In which population can genetic drift be observed?
a)
Small population
b)
Large population
c)
Non isolated population
d)
Nonrandom mating population
10.
Which assumptions are essential for a population to be in the Hardy-Weinberg equilibrium?
a)
I and II
b)
I and III
c)
II and III
d)
I, II and III
11.
Where does DNA replication occur?
a)
Nucleus.
b)
Nucleolus.
c)
Cytoplasm.
d)
Nucleoplasm.
12.
Transcription is the transfer of genetic information from
a)
DNA to rRNA
b)
DNA to mRNA
c)
mRNA to tRNA
d)
tRNA to mRNA
13.
Which flow of genetic information in biological system is CORRECT?
a)
DNA -----> RNA -----> protein
b)
RNA -----> DNA ----> protein
c)
Protein ----> DNA -----> RNA
d)
RNA ----> protein -----> DNA
14.
Which of the following enzymes are involved in DNA replication?
a)
I and II
b)
I and III
c)
II and III
d)
I, II and III
15.
Protein synthesis consists of
a)
translation only.
b)
transcription only.
c)
transcription and translation.
d)
DNA replication and transcription.
16.
Which of the followings are the component of operon?
a)
I and II
b)
I and III
c)
II and III
d)
I, II and III
17.
Which of the following is encodes by lacY?
a)
β-galactosidase
b)
Transacetylase
c)
Permease
d)
Repressor
100 %
