Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 1

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Question 1
1 / -0

The best method to determine the homozygous and heterozygous of an individual is

A
Self-fertilization

B
Test cross

C
Back cross

D
Inbreeding

Solution

Homozygous and heterozygous of an individual is determined by test cross method in which homozygous recessive is crossed with F1 hybrid individual.
Question 2
1 / -0

Each strand of DNA has a typical structure. Which of the following statements correctly explains its structure?

A
The sugar-phosphate chain on the outside and the bases on the inside are held together by weak hydrogen bonds.

B
The sugar-phosphate chain on the inside and the bases on the outside are held together by weak hydrogen bonds.

C
The sugar-phosphate chain on the outside and the bases on the inside are held together by strong hydrogen bonds.

D
The sugar-phosphate chain on the inside and the bases on the outside are held together by strong hydrogen bonds
Question 3
1 / -0

Which of the following sequences of the steps involved in the process of polymerisation of amino acids to form a polypeptide is correct?

(1) Activation of amino acids, Termination of polypeptide synthesis, Elongation of polypeptide synthesis, Initiation of polypeptide synthesis
(2) Initiation of polypeptide synthesis, Activation of amino acids, Elongation of polypeptide synthesis, Termination of polypeptide synthesis
(3) Termination of polypeptide synthesis, Elongation of polypeptide synthesis, Activation of amino acids, Initiation of polypeptide synthesis
(4) Activation of amino acids, Initiation of polypeptide synthesis, Elongation of polypeptide synthesis, Termination of polypeptide synthesis

A
(1)

B
(2)

C
(3)

D
(4)
Question 4
1 / -0

When live rough-type bacteria and heat killed S-type were injected together into mice, they died due to pneumonia. Which of the following explains this correctly?

A
Rough-type bacteria, when injected into mice, produce pneumonia.

B
Smooth-type bacteria, when injected into mice, produce pneumonia.

C
Some factors from the dead S-cells convert the live R-cells into S-cells and pneumonia is produced.

D
Some factors from the dead S-cells, when injected into mice, became live S-cells and produced pneumonia.
Question 5
1 / -0

The building block of nucleic acid is

A
nitrogenous base

B
ribose sugar

C
phosphate group

D
nucleotide
Question 6
1 / -0

The physical expression or appearance of a character is called as

A
Ecotype

B
Phenotype

C
Morphology

D
Genotype

Solution

The physical appearance of a character is called as phenotype. The genetic make of individual is called genotype. Tallness, round, wrinkled, yellow etc. are physical appearance.
Question 7
1 / -0

Which of the following shows the correct type of mutation that takes place on insertion of three bases?

A
Inserts multiple codons

B
Inserts one codon

C
Alters the reading frame from the point of insertion

D
Inserts multple amino acids
Question 8
1 / -0

The tendency of offspring to differ from parents is called

A
Resemblance

B
Variation

C
Inheritance

D
Heredity

Solution

Variation is the tendency of offspring to differ from its parents. Variation occurs due to change in genetic makeup of offsprings
Question 9
1 / -0

Which of the following does not define the transcription unit in a DNA?

A
Terminator

B
Promoter

C
Intron

D
Structural gene
Question 10
1 / -0

Which of the following base pairs in DNA are correct?

A
Adenine-Cytosine

B
Guanine-Cytosine

C
Adenine-Guanine

D
Guanine-Thymine

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Re-Attempt Weekly Quiz Competition

Molecular Basis of Inheritance Test - 1

Result

Molecular Basis of Inheritance Test - 1

Score

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Rank

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SHARING IS CARING

Question 1

Self-fertilization

Test cross

Back cross

Inbreeding

Solution

Question 2

The sugar-phosphate chain on the outside and the bases on the inside are held together by weak hydrogen bonds.

The sugar-phosphate chain on the inside and the bases on the outside are held together by weak hydrogen bonds.

The sugar-phosphate chain on the outside and the bases on the inside are held together by strong hydrogen bonds.

The sugar-phosphate chain on the inside and the bases on the outside are held together by strong hydrogen bonds

Question 3

(1)

(2)

(3)

(4)

Question 4

Rough-type bacteria, when injected into mice, produce pneumonia.

Smooth-type bacteria, when injected into mice, produce pneumonia.

Some factors from the dead S-cells convert the live R-cells into S-cells and pneumonia is produced.

Some factors from the dead S-cells, when injected into mice, became live S-cells and produced pneumonia.

Question 5

nitrogenous base

ribose sugar

phosphate group

nucleotide

Question 6

Ecotype

Phenotype

Morphology

Genotype

Solution

Question 7

Inserts multiple codons

Inserts one codon

Alters the reading frame from the point of insertion

Inserts multple amino acids

Question 8

Resemblance

Variation

Inheritance

Heredity

Solution

Question 9

Terminator

Promoter

Intron

Structural gene

Question 10

Adenine-Cytosine

Guanine-Cytosine

Adenine-Guanine

Guanine-Thymine

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