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Subjects
Science State Board
Class 10
Genetics
Textbook questions
2.
Choose the correct answer II
Exercise condition:
4
m.
1.
The _____________ units form the backbone of the DNA.
Phosphate
5 carbon sugar
Nitrogenous bases
Sugar phosphate
2.
Okasaki fragments are joined together by ____________.
Helicase
DNA ligase
RNA primer
DNA polymerase
3.
The number of chromosomes found in human beings are _________.
22 autosomes and 1 allosome
46 autosomes
22 pairs of autosomes and 1 pair of allosomes
46 pairs autosomes and 1 pair of allosomes
4.
The loss of one or more chromosome in a ploidy is called ________.
Aneuploidy
Polyploidy
Euploidy
Tetraploidy
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