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An unfertilized human egg contains

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Important Questions on Principles of Inheritance and Variation

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 13

The structure present over chromosome is

Or
The structure of the chromosome to which spindle fibre is attached is

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 14

Match column I with column II and select the correct option

Column I

(Name of the organism)

Column II

(Haploid chromosome number in gamete)
A. Ophioglossum 1. 23
B. Rice 2. 24
C. Potato 3. 12
D. Man 4. 630
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 15
Who used the word "chromosome" ?
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 16
Select the incorrect match
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 17
Solenoid is a structure of-
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 18

Total collection of genes at any time in a unit of evolution is

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The sum of genes in a population is called

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 19
The distance between two genes in a chromosome is measured in cross-over units which represent
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 20
The chromosomal number in the meiocytes of housefly is ?