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Biology 10th Class English Medium Chapter 15 Online Test MCQs With Answers

Question # 1

The are how many hydrogen bonds between cytosine and guanine?

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one

two

three

four

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Question # 2

How many hydrogen bounds are formed between adenine and thymine?

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Question # 3

Alternatives forms of a gene are called:

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Allele

DNA

Chromosome

Gamete

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Question # 4

Chromatin material is made of:

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DNA

Protein

RNA

DNA and Protein

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Question # 5

The allele which is not expressed is called:

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Dominant

Phenotype

Genotype

Recessive

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Question # 6

THe location or position of genes on chromosomes are called:

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Loci

Alleles

Phenotypes

Genotypes

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Question # 7

How many pea plants were used in experiment of Mendel?

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28,000

29,000

26,000

27,000

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Question # 8

Expression of genotype in the form of trait is:

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Genome

Phenotype

Complete dominance

Incomplete dominance

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Question # 9

International breeding between individuals for certain traits, or combination of traits is called as.

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Variations

Evolution

Natural selection

Artificial selection

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Question # 10

On which vegetable , Mendel carried out a large number of experiments?

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Pea

Tomatto

Potato

Gabbage

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Question # 11

An organism has two different alleles for a single trait. Its genotype is said to be:

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Homozygous

Heterozygous

Holozygous

Hemizygous

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Question # 12

The genotype of wrinkled green seeds was:

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RRyy

RyYr

RRYY

rryy

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Question # 13

It is a condition in which normal body pigments are absent:

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Color blindness

Albinism

Diabetes

Sickle cell anacmia

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