Asksia AI LOGO

Sia

Question
Biology
Posted 4 months ago
why is genetic variation at the DNA level does not often result in phenotypic variation?
Sign in to unlock the answer
Answer from Sia
Posted 4 months ago
Answer
Genetic variation at the DNA level does not often result in phenotypic variation due to several biological mechanisms that buffer or mask the effects of genetic changes.
Solution
a
Redundancy in the genetic code: The genetic code is degenerate, meaning that multiple codons can code for the same amino acid
b
Regulatory elements: Gene expression is controlled by regulatory elements that can compensate for changes in DNA sequence
c
Epigenetics: Modifications to DNA or histone proteins can influence gene expression without altering the underlying DNA sequence
d
Developmental processes: Organisms have robust developmental processes that can adjust for minor genetic changes to maintain a stable phenotype
e
Environmental factors: The environment can influence the expression of genes and can mask or enhance genetic variation
Key Concept
Genetic buffering mechanisms
Explanation
These mechanisms include redundancy in the genetic code, regulatory elements, epigenetic modifications, developmental processes, and environmental factors, all of which can prevent changes at the DNA level from manifesting as changes in the phenotype.

Not the question you are looking for? Ask here!

Enter question by text

Enter question by image

Upgrade to Asksia Pro

Join a AskSia's Pro Plan, and get 24/7 AI tutoring for your reviews, assignments, quizzes and exam preps.

Unlimited chat query usages
Strong algorithms that better know you
Early access to new release features
Study Other Question