Variation and Genetics Biology MCQs


FSC Biology MCQs

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[question]
In which of the following cases, genotypic and phenotypic ratio will remain same in F2 generation
A. Law of independent assortment B. Law of Segregation
C. Test cross D. Incomplete dominance.
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[explanation]d[/explanation]
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[question]
How many pairs of homologous chromosomes are present in Pisum sativum
A. Five pairs B. Six pairs
C. Seven pairs D. Eight pairs.
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[explanation]c[/explanation]
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[question]
A pea plant with yellow seed was crossed to a plant having green seeds. What will happen in F1; if plants are true breeding
A. All seeds will be yellow B. Half of seeds will be yellow
C. All the seeds will be green D. Both will be present in ratio of 1:2:1
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[explanation]A[/explanation]
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[question]
Which of the following is monohybrid cross
A. TT x tt B. TTYy x Ttyy
C. Both of these D. None of these
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[explanation]A[/explanation]
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[question]
If a heterozygous individual shows the complete effect of both alleles, the type of inheritance would be
A. Complete dominance B. Non dominance
C. Incomplete dominance D. Co-Dominance
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[explanation]d[/explanation]
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[question]
A man with blood group “A” marries a woman of blood group “B”. Both are heterozygous. What is the off-springs having phenotype “O”
A. Zero B. 25%
C. 50% D. 75%
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[explanation]b[/explanation]
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[quiz]
[question]
In nature, Garden pea is
A. Self-fertilized B. Cross fertilized
C. Cross pollinated D. None of these
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[explanation]A[/explanation]
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[quiz]
[question]
During test cross, if all offsprings are phenotypically dominant then parents are
A. Homozygous B. Heterozygous
C. One homozygous other heterozygous D. None of these
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[explanation]A[/explanation]
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[question]
Such inheritance in which traits vary quantitatively is
A. Continuously varying trait B. Incomplete dominance
C. Test cross D. Polygenic inheritance
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[explanation]d[/explanation]
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[quiz]
[question]
Feature correct to O-negative blood group
A. A,B antigen present B. Anti-A, Anti-B antibody present
C. Rh antigen present D. Rh antibody present
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[explanation]b[/explanation]
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