TN Online TestSamacheer Kalvi practice

Genetics Book Back One Mark Online Test (10th Standard Science)

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According to Mendel alleles have the following character

A.Pair of genes B.Responsible for character C.Production of gametes D.Recessive factors

9 : 3 : 3 : 1 ratio is due to

A.Segregation B.Crossing over C.Independent assortment D.Recessiveness

The region of the chromosome where the spindle fibres get attached during cell division

A.Chromomere B.Centrosome C.Centromere D.Chromonema

The centromere is found at the centre of the ________________ chromosome.

A.Telocentric B.Metacentric C.Sub-metacentric D.Acrocentric

The _____________ units form the backbone of the DNA.

A.5 carbon sugar B.Phosphate C.Nitrogenous bases D.Sugar phosphate

Okasaki fragments are joined together by ___________________ .

A.Helicase B.DNA polymerase C.RNA primer D.DNA ligase

The number of chromosomes found in human beings are ___________________ .

A.22 pairs of autosomes and 1 pair of allosomes. B.22 autosomes and 1 allosome C.46 autosomes D.46 pairs autosomes and 1 pair of allosomes.

The loss of one or more chromosome in a ploidy is called ___________ .

A.Tetraploidy B.Aneuploidy C.Euploidy D.polyploidy

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Book Back Questions8 textbook MCQs · solved Additional MCQs15 extra MCQs · solved Practice TestInteractive · instant score Additional MCQ TestTest yourself on the extra set

About this Genetics test

This free online practice test covers Genetics from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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1 Laws of Motion 2 Optics 3 Thermal Physics 4 Electricity 5 Acoustics 6 Nuclear Physics 7 Atoms and Molecules 8 Periodic Classification of Elements 9 Solutions 10 Types of Chemical Reactions 11 Carbon and Its Compounds 12 Plant Anatomy and Plant Physiology 13 Structural Organisation of Animals 14 Transportation in Plants and Circulation in Animals 15 Nervous System 16 Plant and Animal Hormones 17 Reproduction in Plants and Animals 19 Origin and Evolution of Life 20 Breeding and Biotechnology 21 Health and Diseases 22 Environmental Management 23 Visual Communication