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Get Answers to all your Questions
From the internet, gather information about the chromosome numbers of five animals and five plants. Correlate the number with the size of organism and answer the following questions.
(a) Do larger organisms have more number of chromosomes/cells?
(b) Can organism with fewer chromosomes reproduce more easily than organisms with more number of chromosomes?
(c) More the number of chromosomes/cells greater is the DNA content. Justify.
Answers (1)
Ans.
PLANTS Chromosome number ANIMALS Chromosome number
Rice 24 Housefly 8
Apple 34 Dog 78
Potato 48 Butterfly 380
Onion 16 Human 46
Maize 20 Rat 42
(a) No, there is a relation between the size of the organism and the number of chromosomes.
(b) No, the reproduction process depends on environmental factors such as availability of water, pollinator etc. and not on the number of chromosomes
in organisms.
(c) Yes, genes are segments of DNA. DNA is closely packed into chromosomes hence more chromosome means greater the DNA.
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