Genetic variation is a measure of the genetic differences that exist within a population. The genetic variation of an entire species is often called genetic diversity. Genetic variations are the differences in DNA segments or genes between individuals and each variation of a gene is called an allele.For example, a population with many different alleles at a single chromosome locus has a high amount of genetic variation. Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population.
Answer:
Cells become cancer cells largely because of mutations in their genes. Often many mutations are needed before a cell becomes a cancer cell. The mutations may affect different genes that control cell growth and division. Some of these genes are called tumor suppressor genes.
Explanation:
The correct answer is Streptococcus.
<h3>
What is Glomerulonephritis?</h3>
a disorder when the kidney's tissues swell up and have trouble removing waste from the circulation. Infections, inflammatory ailments (like lupus), certain genetic problems, and other illnesses or conditions can all contribute to glomerulonephritis. It could also be brought on by using specific medications or coming into contact with specific substances. Blood and protein in the urine, high blood pressure, edema of the face, hands, feet, and legs, exhaustion, and anemia are other signs and symptoms. Glomerulonephritis can cause kidney damage and renal failure if it is not treated or managed. known also as nephritis.
learn more about Glomerulonephritis refer:
brainly.com/question/12972369
#SPJ4