Answer:
Cell
Explanation:
They are the 'building blocks' of life and make up organisms.
A.
The respiratory system transports oxygen and other nutrients to the heart for the circulatory system.
I hope this helped you hon
The purpose is to help us achieve our life-span goals. And to ensure that our income allocated is being best suited to achieving our life-span we need to review our budget at least once a year. And if you change your goals you should also review the budget so that you achieve the short-term and life-span goals.
Answer:
A person with sickle cell trait has one mutated copy of the hemoglobin gene, a person with sickle cell disease has two mutated copies.
Explanation:
Sickle cell disease also known as sickle cell anemia is caused by mutation of the beta chain of hemoglobin, the gene for which lies in 11th number chromosome. If a person possess only one mutated gene, then the disease is not expressed in the person. The person then only possess the trait for sickle cell anemia, that is, there is a chance of sickle cell disease in the offspring, but the sickle cell trait are usually asymptomatic or live like normal individual. While the person possessing two mutated gene is said to be suffering from sickle cell anemia and is found to possess S hemoglobin in the red blood cells which is abnormal hemoglobin without any ability to carry oxygen.
The twisted shape of DNA is called Double Helix
