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Results tagged with genetics
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user 55429
Genetics is the branch of biology that deals with the transmission and variation of inherited characteristics.
0
votes
Cystic Fibrosis Genetic Risk Determination
I have seen that even some teachers of genetics were puzzled when seeing the correct answer (2/3). …
- 136
1
vote
Accepted
gene mutation occurs on two strands of DNA or just one strand?
A "mutation" is a permanent alteration of the genetic composition of an individual. To obey this definition, a base change in one strand must be accompanied by a corresponding change in the opposite s …
- 136
1
vote
Using punnett squares to express sex/gene linkage and recombination frequency
| X1X1 X1X2
.45 | .405 .045
|
X2 | X1X2 X2X2
.05 | .045 .005
|
Y | X1 Y X2 Y
.5 | .45 .05
(You may note that this situation roughly depicts the population genetics …
- 136
5
votes
What is neutral theory of evolution?
Your question would deserve a long essay. R.C. Lewontin wrote a book ("The genetic basis of evolutionary change" - Columbia U.P) on this subject in 1974, right after the neutral theory had been explic …
- 136
0
votes
Why is sickle cell trait expressed in half of all cells rather than all cells containing hal...
"The sickle cell trait" affects people who are homozygous for the HbS allele. These individuals only have hemoglobin S (after all fetal and embryonic hemoglobin genes are switched off). Hemoglobin S f …
- 136