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Biology 10th Class English Medium Chapter 15 Online Test MCQs With Answers
Question # 1
Adenine always pairs with:
Choose an answer
Guanine
Cytosine
Uracil
thymine
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Question # 2
In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:
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Guanine
Cytosine
Thymine
Uracil
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Question # 3
It is the process by which the better genetic variations become more common in successive generations of population:
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Variation
Artificial selection
Selective breeding
Natural selective
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Question # 4
Sequence of amino acid is protein is controlled by sequence of ___ in DNA.
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Genes
Loci
Nucleotides
Alleles
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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 characteristics which appear in an organism are called:
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Genotype
Karyotype
Phenotype
Body type
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Question # 7
Alternative forms of a gene are called.
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Allele
DNA
Chromosome
Gamete
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Question # 8
It is a situation where in heterozygous genotypes, both the alleles express as a blend and neither allele is dominant over the other:
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Incomplete dominance
Co-dominance
Complete dominance
None of these
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Question # 9
Which component of cell is involved in translation?
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Ribosome
Mitocondria
Golgi apparatus
Nucleus
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Question # 10
These are unit of inheritance :
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Genes
Alleles
Phenotype
Genotype
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Question # 11
How many genotypes are possible for the allele ''A'' and ''a'' ?
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two
three
four
seven
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Question # 12
Cytocine always makes pair with :
Choose an answer
Guanine
Hydrogen
Adenine
Thymine
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