The male sperm determines whether it is a girl or a boy, if it has XX chromosomes it is a girl if it has XY chromosomes it is a boy. Males can only receive Y chromosomes from their fathers.
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Answer:
Communication through Roots: Plants are thought to recognize kin through the secretion and reception of root exudates.
Explanation:
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all living and extinct species, so it would be b. The reason is because all living and extinct animals need a scientific name to be identified, such as when you find dinosaur bones. Dinosaurs are extinct, so you use a scientific name to determine what kind of dinosaur.
Answer:
Diffusion occurs in a type of cell transport called passive transport.
This type of cell transport doesn't use any energy. It goes from a high to low concentration gradient.