10th Class Biology Solved MCQS Chapter 6

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10 Class Biology MCQS
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The allele which is nto expressed in F1 generation is called:
Recessive
Mutant
Dominant
Selected

ABO blood system is controlled by a gene I The number of alleles I.The number of alleles of this gene are:
many
three
five
two

International breeding between individuals for certain traits, or combination of traits is called as.
Artificial selection
Evolution
Natural selection
Variations

The organisms expressed physical trait such as seed colour or pod shape is called.
Karyotype
Genotype
Phenotype
Baby type

In human body cells the number of chromosomes present are:
48
52
23
46

Among following which is favourable variation in mouse?
Dark coloured skin
Light coloured skin
All of these
Medium coloured skin

In a nucleosome, DNA is wrapped around protein named.
Interferon
Haemoglobin
Insulin
Histone

How many pairs of homologous chromosomes are present in human body cells.
23
24
25
22

Ribisome reads the sequence of mRNA nucleotides and joins specific amino acids to form protein. This step is known as:
Replication
Translation
Combination
Transcription

The structure of RNA model was proposed by:
4
J.de Lamarck
Charles Darwin
c.de Buffon

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