which is more likely to be the cause of down syndrome the egg or the sperm?
The egg
Answer:
A) heritable traits cannot be altered by experience
Explanation:
This is because the Darwinist believe that heritable traits were acquired from previous generation not from practise or learning which may develop to experience with time.He believed that certain selective pressures must have acted or selected these organisms to possess these heritable characteristics, and can not be altered by experience whicg is acquired with age.
He should conclude therefore that variation in the organisms which possess these characteristics should be the main factor which gives them selective advantages to inherit these traits compare to others in this same surrounding environment Therefore he will discard the influence of environment.
The condition common to protozoa whereby the cell of the organism acts as a gamete is isogamy. It is <span>a condition in which the sexual cells, or gametes, are of the same form and size and are usually indistinguishable from each other. Hope this answers the question.</span>
According to the activation-synthesis theory of dreaming, the source of a dream is neuronal firing in the lower brain stem. It is also known as the medulla oblongata or just medulla. It is essential in processes like blood pressure and heart rate. Also, it is responsible in a number of reflexes in the body or the involuntary actions like coughing, sneezing and vomiting. It is said to contain cells that would turn REM on and off. From recent research, it is the part of the brain that is the origin of the electrical impulses where dreams are results. It is connected to other parts of the brain which controls memory, movement, hearing and vision.
