A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in the:1. Zygote2. Placenta3. Testes of the father4. Overies of the mother

1. Zygote

Explanation:

A zygote is formed due to the fertilization of the female egg by the sperm cell.

A zygote cell is eukaryotic in nature. It is also a diploid cell because it is the coming together of a sperm cell which is a haploid cell and a female egg which is also a haploid cell.

A zygote cell contains DNA from both the sperm and the egg.

This is why in other to change the DNA of a sexually reproducing organism after fertilization and have an new DNA present in every cell of the organism, the scientist would have to change the DNA in the Zygote.

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explanation: