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TN 12th Standard Biology Zoology - Reproduction in Organisms Creative Questions Study Material - QB365 Set B
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Published on: 05/11/2020
12th Standard Botany - Classical Genetics English Medium Free Online Test One Mark Questions 2020 - 2021
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
According to Mendel, which is not a dominant trait?
Wrinkled seeds
Purple flower
Inflated pod form
Axial flower portion
2.
Assertion (A): Cytoplasmic male sterility is a Mendelian inheritance
Reason (R): The genes for cytoplasmic male sterility in peal maize is located at mitochondrial DNA
A and R are correct R explains A
A and R are incorrect
A is correct R is incorrect
A is incorrect R is correct
3.
In an intergenic interaction, the gene that suppresses the pherotype of a gene is said to be ___________
Dominant
Inhibitory
Epistatic
Hypostatic
4.
Gregor Mendel ___________
(i) was born in Czechoslovakia
(ii) did his experiments in Pisum fulvum
(iii) was the first systemic researcher in genetics
(iv) Published his results in the paper "Experiments on Plant Hybrids"
All are correct
(ii), (iii), (iv) are correct
(i), (iii),(iv) are correct
(i), (iii), (iv) are correct
5.
Which is not a correct statement?
(A) Variations are the raw materials for evolution
(B) Variations provide genetic material for natural selection
(C) It helps the individual to adapt to the changing environment
(D) Variations allow breeders to improve the crop field
A and D
B only
C and D
none of he above
6.
In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates ______.
The two genes are located on two different chromosomes
Chromosomes failed to separate during meiosis
The two genes are linked and present on the some chromosome
Both of the characters are controlled by more than one gene
7.
In his classic experiments on Pea plants, Mendel did not use ______.
Flowering position
Seed colour
Pod length
Seed shape
8.
9.
Test cross involves ____.
Crossing between two genotypes with recessive trait
Crossing between two F1 hybrids
Crossing the F1 hybrid with a double recessive genotype
Crossing between two genotypes with dominant trait
10.
In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype _____.
aaBB
AaBB
AABB
aabb
1.
(a)
Wrinkled seeds
2.
(d)
A is incorrect R is correct
3.
(c)
Epistatic
4.
(c)
(i), (iii),(iv) are correct
5.
(d)
none of he above
6.
(c)
The two genes are linked and present on the some chromosome
7.
(c)
Pod length
8.
(d)
9.
(c)
Crossing the F1 hybrid with a double recessive genotype
10.
(d)
aabb
12th Standard Syllabus & Materials
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TN 12th Standard Physics Electronics and Communication Creative Questions Study Material - QB365 Set A
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Economics

Commerce

Accountancy

History

Computer Applications

Biology

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Computer Applications

Computer Science

Business Maths and Statistics

Commerce

Economics

Maths

Chemistry

Physics

Computer Technology

History

Accountancy

Tamil

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