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Published on: 27/08/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Biology Subject - Botany - Classical Genetics, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
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.
Statement 1: Intergenic gene interaction occurs between alleles at the same locus
Statement 2: Co-dominance is an example of intergenic gene interaction
Statement 1 is correct & Statement 2 is incorrect
Statement 1 is incorrect & Statement 2 is correct
Both Statements 1 & 2 are correct
Both Statements 1 & 2 are incorrect
2.
Identify the mismatched pair
Chloroplast inheritance - Gregor Mendel
Polygenic inheritance - H. Nilsson
Lethal genes - E. Baur
Incomplete dominance - Carl Correns
3.
What is the phenotypic ratio in case of incomplete dominance?
9: 7
3: 1
1: 2 : 1
1: 1 : 1 : 1
4.
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
5.
Assertion (A): Pleiotropic gene affects multiple traits
Reason (R): ABO blood group is an example for Pleiotropy
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
6.
Assertion (A): Codominance is an example of intragenic interaction
Reason (R): Interaction takes place between the alleles of the same gene
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
7.
Assertion (A): Test cross is done between F2 hybrid with F1 recessive
Reason (R): It helps to identify the homozygosity of hybrids
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
8.
In an intergenic interaction, the gene that suppresses the pherotype of a gene is said to be ___________
Dominant
Inhibitory
Epistatic
Hypostatic
9.
Crossing of F1 to anyone of the parent refers to _____________
selfing
back cross
test cross
all of the above
10.
Mendel's work were rediscovered by__________
Hugo de Vries
Tschermak
Carl Correns
all the above
11.
How many characters studied by Mendel in pisum sativum
Three
Five
Seven
Nine
12.
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
13.
An allele is__________
another word for a gene
Alternate forms of a gene
morphological expression of a gene
genetic make up of an organism
14.
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
15.
The term 'Genetics' was introduced by__________
Gregor Mendel
W. Bateson
Hugo de Vries
Carl Correns
1.
(c)
Both Statements 1 & 2 are correct
2.
(a)
Chloroplast inheritance - Gregor Mendel
3.
(c)
1: 2 : 1
4.
(d)
A is incorrect R is correct
5.
(c)
A is correct R is incorrect
6.
(a)
A and R are correct R explains A
7.
(b)
A and R are incorrect
8.
(c)
Epistatic
9.
(b)
back cross
10.
(d)
all the above
11.
(c)
Seven
12.
(c)
(i), (iii),(iv) are correct
13.
(b)
Alternate forms of a gene
14.
(d)
none of he above
15.
(b)
W. Bateson
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