Question

1) Do larger organisms have more number of chromosomes person.
2) Can organisms with fear chromosomes reproduce more easily than organisms with more number of chromosomes.
3) More the number of chromosomes puzzle greater is the DNA content justify.

Answer 1

Answer:

Explanation:

a) No, there is no correlation between size of organism and its chromosome number. Even smaller organisms may have more chromosomes than the larger ones.

(b) No, process of reproduction is independent of the chromosome number and depends on a environmental factors like nutrients availability, water source, suitable mate etc.

(c) Yes, Genes are the stretch of DNA. Genes are linearly arranged on chromosomes. Hence, more the number of chromosomes, greater is the amount of DNA.

Answer 2

Answer:

(a) Do larger organisms have more number of chromosomes/cells?

Ans. Mango (40) and rattlesnake fern (184) show that size of organism has nothing to do with number of chromosomes.

(b) Can organism with fewer chromosomes reproduce more easily than organisms with more number of chromosomes?

Ans. Gestation period in elephant is much longer than that in goat. Goat has a larger number of chromosomes than elephant. This shows that an organism with fewer number of chromosomes need not reproduce more easily than organisms with more number of chromosomes.

(c) More the number of chromosomes/cells greater is the DNA content. Justify.

Ans. Chromosomes are composed of DNA. Hence, it can be said that more the number of chromosomes/cells greater is the DNA content.