Your answer is the last option. D. Mitochondria.
Affirmative, that is correct.
A genetic disorder is nothing more than an abnormal occurrence in a genome, which means that if you change DNA you'll change the genome, and if the change isn't acceptable, genetic disorders can occur easily.
Genetic disorders is a fun field within genetics, and it isn't easy. The functioning of a gene might be an easy concept now a days, but we haven't mastered it. For example, it's not like maths:
- Somebody comes up with a new, unsolved problem, and tries to solve it, and while doing that, the person can create laws, theorems, equations, etc.
Once you come up against a genetic disorder (you can't just create a genetic disorder to study it) you have to study the genetic disorder itself, what caused it and why.
Hope it helped,
BioTeacher101
It looks like the closest match is ATP
Answer:
Peter's parents genotypes: hh and hh
Peter's possible genotypes: HH or Hh
Gretchen's concern: The legitimacy of Peter's parent is doubtful
Explanation:
Assuming hairy shoulders allele is represented by H and non-hairy shoulder allele by h. H is dominant over h, hence, for someone to have a hairy shoulder, he/she must posses one H allele (Hh or HH).
Peter's parents do not have hairy shoulders, hence their genotypes will be hh and hh.
Peter has hairy shoulder, hence, his genotype is either HH or Hh.
Gretchen is concerned because neither of Peter's parents have hairy shoulder. This means neither of the parents have the hairy shoulder allele (H). The concern of Gretchen would be about the source of Peter's hairy shoulder allele. If neither of the supposed parents have the allele, where did he get his allele from?
The legitimacy of Peter's parents is questionable and this is why Gretchen is concerned.