Answer/Explanation:
Red/green colorblindness is a recessive, X-linked condition. That means that the affected gene is on the X chromosome, and that the phenotype will only be present if there is no "healthy" gene, which is dominant to the mutated gene.
For two unaffected people to have an affected son, the mother must be a carrier. Remember, females have two X chromosomes and males have one. So if a female is a carrier of the colorblindness mutation, she will have one copy of the mutation and one normal copy of the gene, and will therefore be unaffected.
The punnet square (attached) shows that all their female children would be unaffected (have the B gene), but 1:2 male children would be colorblind, as their only copy of the gene is mutated (b).
A. Providing smoking workers with an area where they can smoke ( most likely but not sure)
<span>A substance that is capable of acting as both an acid and a base is called
amphoteric</span>
Answer:
d. the conversion is consistent with both laws of thermodynamics.
Explanation:
No sorry. But if you have questions to ask to prepare for the exam just ask!