Can someone please tell me if this paragraph makes any sense at all? I feel like I contradict myself, as I do not understand the subject very well. Thank you.

"Since neither of the parents in the pedigree has the genetic disorder (as indicated by their non-darkened shapes, which represent individuals that are unaffected by the disorder), they must both be recessive for the specific trait. This means that both genes are the recessive gene for the trait. Therefore, the genotype of both parents is heterozygous (Rr and Rr—dominant gene R and recessive gene r), and the trait itself is recessive, since neither parent has the disorder. If the disorder were dominant, then one of the parents would have to carry it. Since this is not the case, however, we may conclude that both parents are heterozygous carriers, and that the trait itself is recessive. Both parents are also carriers of the disorder, meaning that they are heterozygous for the inherited disorder but do not show symptoms of the disorder. The only offspring that is affected by the genetic disorder is offspring number 3, as indicated by her darkened shape. Her genotype is homozygous recessive (rr), meaning that she has the same two alleles for the gene, since she is a carrier of two of the recessive genes of that particular trait. The other offspring do not have darkened shapes, and therefore we may conclude that they are not affected by the specific genetic disorder, like offspring number three is."

It looks like 3 copies of the same thing.

Sra

After analyzing the paragraph, it seems to make sense and provides an understanding of the subject matter. However, I can provide a step-by-step breakdown of the explanations and concepts mentioned in the paragraph to further enhance your understanding.

1. Begin by examining the shapes in the pedigree: The non-darkened shapes indicate individuals unaffected by the genetic disorder.

2. Since neither parent shows the genetic disorder, it suggests that both parents possess the trait as Rr (heterozygous) carriers, assuming the trait is recessive. This inference is drawn because if the disorder were dominant, at least one parent should exhibit it.

3. Therefore, the genotype of both parents is Rr, indicating that both carry the dominant gene R and the recessive gene r.

4. Based on the fact that the parents are carriers, it also signifies that they are heterozygous for the inherited disorder but do not display symptoms of the disorder.

5. The only offspring who is affected by the genetic disorder is designated as offspring number 3, indicated by the darkened shape. This suggests that offspring number 3 has a homozygous recessive genotype (rr), meaning she possesses two copies of the recessive gene for that specific trait.

6. The remaining offspring, who do not have darkened shapes, are concluded to be unaffected by the specific genetic disorder, similar to offspring number three.

By following these steps, you can understand the logic behind the paragraph's explanations and the conclusions drawn from the pedigree.