Answer:
The correct option is D
Explanation:
A male sperm needs a x chromosome and y chromosome , whereas a female sperm needs 2 x chromosomes , Thus both genders needing x chromosome
Answer: Capillaries are tiny branched blood vessels that joins the arteries to the veins
Explanation:
Capillaries are found in the junctions between arteries and veins in the tissues.
They have the following functions:
- They have tiny walls and are tiny enough to penetrate to all parts of the body
- The thin walls help them diffuse oxygen, nutrients and waste products between cells and the blood.
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They are better because they are for comparative use for instance hair color to finger nails they both grow but onto separate parts of the body.
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