Polar bodies are considered byproducts of oogenesis. They are lacking cytoplasm and are much smaller than a regular egg cell. Typically they disintegrate after meiosis. It is unlikely for the resulting zygote to become a healthy embryo because the polar body was never meant to get fertilized. Therefore it is most likely lacking nutrients, and does not have the necessary resources for a healthy baby to develop.
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The correct answer is A.
Animal cells do not have a cell wall.
A cell wall is the rigid, outermost covering of plant cells and is made up of cellulose. It is absent in animal cells. The cell wall is visible under a light microscope.
Animal cells are instead covered by a cell membrane. It is made up of lipids, proteins, and small amounts carbohydrates. It is a thin and delicate structure that can only be seen using an electron microscope.
Answer:
The DNA must be copied so there is a full set of DNA to pass on to each daughter cell.
Explanation:
Answer:
Option (c).
Explanation:
The kin selection was first used by the Hamilton's and explains how this selection increases the frequency among the recipient and the actor and also explain the genetic relatedness among the family members.
The Hamilton's rule depends on the genetic relatedness r and the benefits obtained by the action to the recipient and the energy or cost used during the action. The selection is positive if the product of genetic relatedness and benefits is more than the cost.
Thus, the correct answer is option (c).
