I think C, the egg is larger so contains more mitochondria. Reason is we maily obtain the mtDNA from our mothers :v
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I Think this is the cell cycle. S phase is the synthesis phase. It is the replication of the DNA and splitting of the cytoplasm.
Example of selective breeding: Cows that produce lots of milk. Selective breeding to create more useful varieties of animals and plants is a form of biotechnology that human beings have used for thousands of years. Biotechnology includes any use of science or technology to alter the characteristics of a particular breed or animal.
