The answer is 3. both of the parents have these dominant genes
Answer:
Long tail and narrow head.
Explanation:
A sperm cell is adapted to reduce friction as it swims by having long head, narrow tail and enzymes. These features of sperm provides ability to swim straight to the egg cell. Long tail helps the sperm cell to swim towards the egg cell, narrow head of sperm cell make the sperm cell for faster swimming towards the egg cell and enzymes present in the head of the sperm helps break through the egg cell membrane so we can say that the long tail and narrow head of sperm cells helps in faster swimming.
Adaptation through natural selection
Answer: <u>Option A point source pollution
</u>
Explanation: The pollutants which can be tracked, from the source of origin are termed as point source pollution. This can be water source, air or even light or noise pollution. The pollutants are easily detected being released from the source of pollution. Whereas the non-point source of pollution are those which are indirect sources and they carry off the pollutants which lie on the way, like runoff water carrying the pesticides from the agricultural land.