Answer:
DNA replication is semi-conservative because each helix that is created contains one strand from the helix from which it was copied. The replication of one helix results in two daughter helices each of which contains one of the original parental helical strands.
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. ... Mutations can also occur as the result of exposure to environmental factors such as smoking, sunlight and radiation.
Btw :
stay safe! :3
Choice answer D because it is fully correct
Answer:
we need to breath and plants helps
Explanation:
Answer: The probable genotype of the patient is a homozygous recessive allele (SS)
Explanation: Sickle cell is a recessive disorder, therefore it must occur in a homozygous state in order to manifest phenotypically. When it occurs in a heterozygous state AS, the dominant allele A will overshadow its effect. Sickle cell is a genetic disease caused by abnormal haemoglobin in the blood which gives the red blood cells a sickle shape denoted as S. A normal haemoglobin gives the red blood cells a disc shape and its denoted by A.
No, a lot of our knowledge isn’t absolute.
There is a lot that is absolute, like "The Earth is round", but some knowledge is not guaranteed.
For example, people used to think "A fungus plus a algae make a lichen" but it’s actually a fungus, an algae and another type of fungus.
This just shows that we’re always learning new things about our world, and someday we might be proven wrong on something big!