10th Standard Syllabus & Materials
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TN 10th English Prose - 4 - The Attic Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Supplementary - 3 - The Story of Mulan Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Poem - 3 - I am Every Woman Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Prose - 3 - Empowered Women Navigating The World Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Supplementary - 2 - Zigzag Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Poem - 2 - The Grumble Family Important Questions And Answers Study Material - QB365 Set A
Published on: 05/12/2020
10th Standard Science Genetics English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021
Download Tamil Nadu 10th Standard Science 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 Science Test1.
In human, each cell normally consists _________of chromosomes.
23 pairs
22 pairs
20 pairs
12 pairs
2.
________is a gene mutation
Deletion
Duplication
Translocation
Ploidy
3.
Franklin and Wilkin were awarded nobel prize for_______.
studying DNA replication
studying about RNA
X - ray diffraction studies of DNA.
isolating DNA
4.
Choose the correct pair
A ≡ T
G ≡ A
A ≡ C
G ≡ C
5.
______is not a nitrogenous base.
Adenine
Thymine
Leucine
Cytosine
6.
L shaped chromosomes are described as_______
acrocentric
metacentric
submetacentric
telocentric
7.
The sex chromosomes in a human cell refer to the______
22nd pair
20th pair
23rd pair
21st pair
8.
Okasaki fragments are joined together by ___________________.
Helicase
DNA polymerase
RNA primer
DNA ligase
9.
10.
9 : 3 : 3 : 1 ratio is due to
Segregation
Crossing over
Independent assortment
Recessiveness
1.
(a)
23 pairs
2.
(a)
Deletion
3.
(c)
X - ray diffraction studies of DNA.
4.
(d)
G ≡ C
5.
(c)
Leucine
6.
(c)
submetacentric
7.
(c)
23rd pair
8.
(d)
DNA ligase
9.
(b)
10.
(c)
Independent assortment
10th Standard Syllabus & Materials
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TN 10th English Prose - 2 - The Night the Ghost Got in Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Supplementary - 1 - The Tempest Important Questions And Answers Study Material - QB365 Set A
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TN 10th English Poem - 1 - Life Important Questions And Answers Study Material - QB365 Set A
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
