Changes in the gene pool are closely related to genetic mutations, which are a major part of evolution.
Answer:
The correct answer is the third statement.
Explanation:
Alexander Fleming was a Scottish biologist, pharmacologist, and botanist. He discovered Penicillin by accident in 1928. While performing research for determining the characteristics of staphylococci, he stacked all the research jars containing staphylococci in the corner of his lab and went to enjoy the holiday with his family.
After coming back, he witnessed that some of the jars had fungus surrounding them and the majority of staphylococci got eradicated. This marked the discovery of penicillin. It was a novel kind of medicine, which exhibited a tendency to treat infections. Thus, it can be concluded that he discovered a novel kind of medicine, which could treat infections.
Answer:
C. 3:3
Explanation:
"Ozone is a gas that is naturally present in our atmosphere. Each ozone molecule contains three atoms of oxygen and is denoted chemically as O3. Ozone is found primarily in two regions of the atmosphere." https://csl.noaa.gov/assessments/ozone/2002/qandas1.pdf
Answer:B-10%
Explanation:
Physiologic changes resulting from the normal aging process place older adults at higher risk for adverse effects.
<span>This means that those organisms have a recessive allele for a trait or mutation but does not display that trait or show symptoms of the disease. However, carriers can pass their recessive allele onto their offspring. If that offspring inherit another recessive allele, from another parent, it becomes recessive homozygous and displays that trait (or has the disease).</span>
