Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 7th Standard Science - English Medium - Heredity

Samacheer Kalvi 7th Science - Heredity - Book Back Questions in English Medium


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Question 1 Of 10

The units form the backbone of the DNA.


Question 2 Of 10

9 : 3 : 3 : 1 ratio is due to


Question 3 Of 10

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


Question 4 Of 10

The loss of one or more chromosomes in ploidy is called ________.


Question 5 Of 10

The centromere is found at the center of the chromosome.


Question 6 Of 10

The number of chromosomes found in human beings is_______.


Question 7 Of 10

According to Mendel alleles have the following character


Question 8 Of 10

Okasaki fragments are joined together ______.


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