Answer:
The correct answer is B the extra chromosome has typically undergone significant rearrangements.
Explanation:
Trisomy is a type of aneuploidy which is characterized by the presence or occurance of an extra copy of a particular chromosome.As a result the chromosomes in which the trisomy is occurring contain 3 arms instead of 2. Trisomy occur due to non disjunction of a particular chromosome during meiosis.
As a result a second copy of chromosome is present inside the cell containing that abnormal chromosome.If the same thing occur in the cell of gamet undergoing fertilization then there is a high chance that the embryo will carry that extra chromosome.
In case of humans Trisomy result in the rearrangement extra chromosome which ultimately give rise to
1 Trisomy 18 occur due to extra copy of chromosome no 18
2 Trisomy 13 occur due to extra copy of chromosome no 13
3 Trsomy 21 occur due to extra copy of chromosome no 21 which is also called down syndrome.
Answer:
A. skin tanning in the sun is an example of adapting to change.
Explanation:
the answer is c because that is the answer im sure and by the way your welcome
Answer:
fovea
Furthermore, the fovea has about 50 cone cells per 100 micrometers squared and has an elliptical shape horizontally. Given this high cellular concentration, it is expectedly the location of the highest visual acuity, or resolution, in the eye.
Explanation: