The answer would be synaptic pruning.

The brain in children will have a much more synaptic connection than adults. This connection is important for learning process in the early stage of life. More synaptic connections allow multiple parts the brain areas to be connected even if there is a damage in one area.
The synapse will be cut down later in a process called synaptic pruning. Only the area that frequently used will be preserved.

3 0

3 years ago

Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son.

Alborosie

Genotype of Mother: XX°

Genotype of Father: XY

Explanation:

Since the Red-green colour blindness is a recessive trait , it will not be visible in a heterozygous female because dominant allele will mask the recessive allele.
Father has only one X chromosome, thus if the trait was present in that X chromosome he must have shown the trait because all the alleles in Y chromosome are recessive.
Since the son has inherited the trait it is obvious that he had recieved the trait from his mother who must have been the carrier.

6 0

3 years ago

What is the “transitional fish”

tester [92]

Answer:

375 million-year-old fish, a large scaly creature not seen before, that they say is a long-sought "missing link" in the evolution of some fishes from water to a life walking on four limbs on land. In addition to confirming elements of a major transition in evolution, the fossils are widely seen by scientists as a powerful rebuttal to religious

Explanation:

on closer examination, scientists found telling anatomical traits of a transitional creature, a fish that is still a fish but exhibiting changes that anticipate the emergence of land animals — a predecessor thus of amphibians, reptiles and dinosaurs, mammals and eventually humans

3 0

4 years ago