Cystic fibrosis affects the lungs, the pancreas, the digestive system, and other organs, resulting in symptoms ranging from brea
thing difficulties to recurrent infections. Which of the following terms best describes this expression of phenotypes a, incomplete dominance
b.codominance
c multiple alleles
d epistasis e pleiotropy
<em>Pleiotropy is a genetic term that describes a situation in which a single gene controls the expression of multiple traits. </em>
Depending on the underlining mechanism, there are different types of pleiotropy:
gene pleiotropy: this occur when a protein representing a gene interacts with other proteins or catalyses multiple reactions
developmental pleiotropy: this occur when mutation of a gene have multiple phenotypic effects
selectional pleiotropy: This occur when the phenotypic expression of a single gene has multiple effects on fitness.
In this case, cystic fibrosis gene has multiple phenotypic effects which include its effects on the lungs, pancreas, digestive system and other organs.
The correct answer is the second choice - peer review process in scientific research exists in order to verify that the conclusions that are made are supported by the data. You cannot make a valid conclusion if you do not have enough evidence or data to prove it - this is why your peers have to go through your research to make sure everything is done according to the rules of scientific research.
A colony on an agar plate that is slightly and equally elevated and unbroken would be classified as circular form of colony. These are pinhead colonies which are usually convex on its entire margins. These form of nutrient agar plates are usually<span> raised or elevated and unbroken.</span><span> </span>
92 chromatids are visible for humans at prophase stage because the replication of 46 chromosomes occur. When the replication of chromosomes occur, each chromosome is converted into two chromatids so when 46 chromosomes replication occur then it changed into 92 chromatids. So we can say that there is 92 chromatids in humans in the prophase stage of mitosis.
