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Biology 10th Class English Medium Chapter 15 Online Test MCQs With Answers
Question # 1
In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:
Choose an answer
Guanine
Cytosine
Thymine
Uracil
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Question # 2
How many genotypes are possible for the allele ''A'' and ''a'' ?
Choose an answer
two
three
four
seven
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Question # 3
It is change in characteristics of a population or species of organisms over the course of generations:
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Replication
Transcription
Evolution
Translation
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Question # 4
Genes consist of.
Choose an answer
RNA
mRNA
Protein
DNA
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Question # 5
In dihybrid cross the genotypic ratio of F2 generation is:
Choose an answer
1 : 1 ; 1 : 1
1 :3 :1 : 1
1 : 2 : 2 : 1
9 : 3 : 3 : 1
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Question # 6
mRNA carries sequence of the nucleotides to ribosomes, Ribosomal reads this sequence and joins specific amino acid to form protein, this process is:
Choose an answer
Duplication
Transcription
Translation
Replication
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Question # 7
The allele which is not expressed is called:
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Dominant
Phenotype
Genotype
Recessive
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Question # 8
Mendel's primary contribution to our understanding of inheritance was:
Choose an answer
The idea that genes are found on chromosomes
Explanation of the patterns of inheritance
The discovery of alleles
Determining that informations contained in DNA are for protein synthesis.
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Question # 9
Adenine always pairs with:
Choose an answer
thymine
guanine
cytosine
uracil
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Question # 10
The characteristics which appear in an organism are called:
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Genotype
Karyotype
Phenotype
Body type
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Question # 11
In variation, the phenotypes shows a complete range of measurements from one extreme to the other is.
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Discontinuous
Continuous
Both a and b
None of these
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Question # 12
Genetics is the branch of biology in which we study:
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Functions
Fossils
Inheritance
Evlution
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Question # 13
Dominant Alleles are represented by:
Choose an answer
Small letters
Capital letters
Roman numbers
Numerical numbers
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