Question

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A gene is a section of a double stranded molecules known as
. This molecule is found within the .of the cell,contained in threadlike structures called .
The two strands form a double helix lined by a series of paired bases. The base adenine is always linked to and the base cytosine is always linked to .
Sometimes the genetic material of a cell changes. This is known as .These change occur very rarely but their incidence can be increased by chemical or ionsing radiation.

Answer 1

(1)DNA
(2) Cell
(3) Chromosomes
(4)Thymine (5) mutation
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Answer 2

-------HEY MATE --------
HERE'S UR ANSWER

1)DNA
2)nucleus
3)nucleotides
4)guanine
5)mutation

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