Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 71

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Weekly Quiz Competition

Question 1
1 / -0

Identify the correct pair of combinations
i) Schwann Omnis cellula e cellula
ii) Ochoa Polynucleotide phosphorylase
iii) Taylor Semi conservative replication of DNA
iv) FlemingRibosomes

A
ii, iv

B
i, iii

C
ii, iii

D
iii, iv
Question 2
1 / -0

Total number of base pairs found in human genome is?

A
$$3.5$$ million

B
$$35000$$

C
$$35$$ billion

D
$$3.1$$ billion

Solution

The human genome of Homo sapiens is stored on 23 chromosome pairs. 22 of these are autosomal chromosome pairs, while the remaining pair is sex-determining. The haploid human genome occupies a total of just over 3 billion DNA base pairs that means 6 billion base pairs per diploid cell.
So, the correct answer is '3.1 billion'.
Question 3
1 / -0

If there are 10,000 nitrogenous base pairs in a DNA then how many nucleotides are there?

A
500

B
10,000

C
20,000

D
40,000
Question 4
1 / -0

Haploid content of human DNA is

A
$$3.3\times 10^6$$ bp

B
$$3.3\times 10^9$$ bp

C
$$4.6\times 10^6$$ bp

D
$$6.6\times 10^9$$ bp

E
$$48502$$bp

Solution

The haploid human genome contains approximately 3 billion base pairs of DNA packaged into 23 chromosomes.

So, the correct answer is '3.3×10^9 bp'.
Question 5
1 / -0

Nucleotide pairs present in human genes vary between

A
100 - 1000

B
500 - 5000

C
2000 - 2,000,000

D
10,000 - 10,000,000

Solution

The human genome consists of 50,000 to 100,000 genes located on 23 pairs of chromosomes. One chromosome in each pair is inherited from the mother, the other from the father. Each chromosome contains a long molecule of DNA, the chemical of which genes are made. Genes are of differing length, ranging in size from roughly 2,000 to as many as 2,000,000 base pairs.
So, the correct answer is '2000-2,000,000.'
Question 6
1 / -0

In yeast mitochondria UGA codes for:

A
Termination codon

B
Initiation codon

C
Tryptophan

D
Tyrosine glycerate concentration

Solution

DNA sequence analysis of mitochondrial genes that code for some mitochondrial proteins has suggested that the opal terminator, UGA, is used as a sense codon in mitochondria. The complete sequences of both the yeast and human genes coding for cytochrome oxidase subunit II contain UGA codons in the reading frame. Chain-termination codon: A set of three adjacent bases in the DNA or their complementary bases in messenger RNA that specifies the end of a polypeptide chain. The three chain-termination codons (in messenger RNA) are UAA, UAG, and UGA. They are also called termination codons, stop codons, or nonsense codons.
So, the correct option is A.
Question 7
1 / -0

The number of DNA coils present over a nu body is?

A
$$1.75$$

B
$$17.5$$

C
$$75$$

D
$$5$$.
Question 8
1 / -0

In one polynucleotide strand of a DNA molecule, the ratio of $$A+T/G+C$$ is $$0.3$$. What is the $$A+G/T+C$$ ratio of the entire DNA molecule?

A
$$0.3$$

B
$$0.6$$

C
$$1.2$$

D
$$1$$

Solution

A + T/G + C ratio is species specific and here mentioned to be 0.3.
While A + G/T + C is the ratio which is constant for all double-stranded DNA and its value is 1 because in a ds-DNA Adenine will always bind to Thymine so A=T while Guanine will always bind to Cytosine so G=C and Purine will always be equal to pyrimidines according to Chargaff rule.
So, the correct answer to the question is '1'.
Question 9
1 / -0

Human genome project was started in

A
$$1989$$

B
$$1990$$

C
$$1992$$

D
$$1995$$

Solution

The Human Genome Project was started in 1990 with the goal of sequencing and identifying all 3 billion chemical units in the human genetic instruction set, finding the genetic roots of disease and then developing treatments.

So, the correct answer is '1990'.
Question 10
1 / -0

Number of genes believed to be present in a human being is

A
1000

B
10,000

C
100,000

D
1,000,000

Solution

The human genome consists of 50,000 to 100,000 genes located on 23 pairs of chromosomes. One chromosome in each pair is inherited from the mother, the other from the father. Each chromosome contains a long molecule of DNA, the chemical of which genes are made.
So, the correct answer is '100,000.'

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Molecular Basis of Inheritance Test - 71

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Molecular Basis of Inheritance Test - 71

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SHARING IS CARING

Question 1

ii, iv

i, iii

ii, iii

iii, iv

Question 2

$$3.5$$ million

$$35000$$

$$35$$ billion

$$3.1$$ billion

Solution

Question 3

500

10,000

20,000

40,000

Question 4

$$3.3\times 10^6$$ bp

$$3.3\times 10^9$$ bp

$$4.6\times 10^6$$ bp

$$6.6\times 10^9$$ bp

$$48502$$bp

Solution

Question 5

100 - 1000

500 - 5000

2000 - 2,000,000

10,000 - 10,000,000

Solution

Question 6

Termination codon

Initiation codon

Tryptophan

Tyrosine glycerate concentration

Solution

Question 7

$$1.75$$

$$17.5$$

$$75$$

$$5$$.

Question 8

$$0.3$$

$$0.6$$

$$1.2$$

$$1$$

Solution

Question 9

$$1989$$

$$1990$$

$$1992$$

$$1995$$

Solution

Question 10

1000

10,000

100,000

1,000,000

Solution

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