Answer:
Mutation
Explanation:
A mutation can be described or explained a change that occurs in the DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors.
This means that the occurrence of Huntingtons disease in high frequency is because of mutation. This is possible because during the settlement of the dutch in 17 the century in South Africa, they might had intercourse with the people that have the disease and inherited it. And they will be transferring the gene with the trait of the disease from one person to another through sex. And this will result to high number of the disease in their population.
Absorption of damaged parts of the cell require hydrolytic enzymes, particularly contained in the lysosomes.
Answer:
Sickle cell trait is an inherited blood disorder that affects 1 million to 3 million Americans and 8 to 10 percent of African Americans.
Answer:
Guard cells
Explanation:
The guard cells are on either side of the stomata and control water loss and gas exchange by swelling to open the stomata and shrinking to close it. When open, gas exchange and water loss will occur. When closed, gas exchange and water loss does not occur.