Both parents are normal. But, some of the kids have the disease. This indicates that the parents are heterozygous for the disease (let's use Dd). They are phenotypically fine because D is normal. But we know they must both carry the diseased d allele because their kids have the disease.
If you cross Dd x Dd you get DD, Dd, Dd and dd as the possible outcomes. But because each time they have a child they roll the dice as to which of the 4 above happens, they were unlucky as 3 of those times they got dd for their child...so 3 of them have the disease (and are dd). One is phenotypically normal but could still be Dd or DD.
I have no idea i just wanted to write this
Esta cita se refiere a las mitocondrias. Las mitocondrias juegan un papel muy importante en la vida de las células, esto se debe a que sin las mitocondrias, la célula no podría sobrevivir.
hope it helps you
a. not be able to meet long term timber needs.
Expository writing is explaining things in clear, logical steps, whereas narrative writing is telling a story, either fiction for enjoyment or an educational or exemplary story for an essay.
