The chromosomes are strands of (1) _ _ _, coiled up like a ball of strings 4 14 1 around a mass of proteins called (2) _ _ _ _ _ _ _ _ which houses thousands of 8 9 19 20 15 14 5 19 3) _ _ _ _ _. The basic unit of chromosome is called 4) _ _ _ _ _ _ _ _ _ _ 7 5 14 5 19 14 21 3 12 5 15 19 15 13 5 which helps to supercoil the DNA.The chromosomes carry and transmit genes from parents to offspring. Each strand is called 5) _ _ _ _ _ _ _ _ _.Chromatids 3 8 18 15 13 1 20 9 4 are held together by 6)_ _ _ _ _ _ _ _ _ _, which divides chromosome into two 3 5 14 20 18 15 13 5 18 5 sections or 7)_ _ _ _.The shorter arm is called 8) _ ,and the longer is 9) _.Each 1 18 13 19 16 17 pair of chromosome is referred to as10) _ _ _ _ _ _ _ _ _ _ chromosomes. In 8 15 13 15 12 15 7 15 21 19 humans, each body cell normally contains 23 pairs of chromosomes, for a total of 46. Half come from the mother, other half from the father.
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