What is meant by DNA copying ?Mention its importance in reproduction.(2 marks) 2.Where is placenta located in human female ?

Asked by omprakasharya123 | 25th Feb, 2012, 10:24: PM

Expert Answer:

DNA replication is a biological process that occurs in all living organisms and copies their DNA; it is the basis for biological inheritance.
If DNA wasn't copied before cell reproduction, after the cells divide they would only have half the DNA that the original cell had.

And since we need all our DNA to tell the rest of the cell how to carry out all functions, with only half the DNA, a cell would shut down.Placenta is located between the developing foetus and the uterine walls

Answered by Meghna Thapar | 27th Feb, 2012, 11:49: AM

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