10th Class Biology Solved MCQS
Pisum sativum is scientific name of:
Frog
Mustard plant
Onion
Pea plant
It is change in characteristics of a population or species of organisms over the course of generations:
Evolution
Transcription
Replication
Translation
The genotype of wrinkled green seeds was:
RyYr
rryy
RRYY
RRyy
Chromatin material is made of.
DNA
DNA and protein
RNA
Protein
An organism has two different alleles for a single trait its genotype is said to be.
Heterozygous
Homozygous
Hemizygous
Holozygous D
An organism has two different alleles for a single trait. Its genotype is said to be:
Homozygous
Holozygous
Heterozygous
Hemizygous
The are how many hydrogen bonds between cytosine and guanine?
two
four
one
three
Which is favourable variation in moths after industrial revolution?
Dark colour
Light colour
None of these
Medium colour
Variation selected for their transmission to next generation are:
Discontinuous
Favourable
None of these
Continuous
Cytocine always pairs with:
Uracil
Guanine
Adenine
Thymine
There are how many pairs of homologous chromosomes in human body cell?
40
23
46
22
Genes are located on:
proteins
DNA
Chromosomes
nucleotide
Gene contain instructions for the synthesis of.
Fats
Proteins
Vitamins
Carbohydrates
An organisms expressed physical trait, such as seed colour or pod shape is called its.
Genotype
Karyotype
Physical type
Phenotype
No. of hydrogen bonds between Adenine and thymine is:
3
4
2
5
We proposed the mechanism of organic evolution in 1838?
Charles Darwin
Charles lyll
Lamark
Gregor Mendel
It is a homozygous genotype:
both A and B
Aa
AA
aa
The Allele which is not expressed is called:
Recessive
Dominant
Homozygous
Hetrozygous
The points of attachment of genes on chromosomes are called.
Translation
Phenotype
Loci
Transcription
In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:
Guanine
Thymine
Uracil
Cytosine
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