Answer:
POINT MUTATION (SUBSTITUTION)
Explanation:
A point mutation is that mutation which involves only one nucleotide base. Point mutation can, however, occur in different ways such as SUBSTITUTION. Substitution point mutation is that which involves the replacement of a single nucleotide base by another in a gene sequence.
This is the case in this question regarding the mutation that causes sickle cell anaemia. According to this question, Sickle cell anemia is a disease that occurs when a mutation in the base pair of the hemoglobin beta gene causes a SINGLE replacement of GLUTAMIC ACID (Glu) by VALINE (Val). This shows that it is a type of SUBSTITUTION POINT MUTATION.
A variation of language found in a geographically isolated area is called regional dialect.
Dialect is a word meaning a variety of language that signals where a person comes from. Dialect is usually interpreted geographically (regionally) hence the term regional dialect.
A dialect is distinguished from other dialects of the same language mainly by features of linguistic structure such as grammar (specifically morphology and syntax) and vocabulary.
For example wheat known by that name in England while in Scotland it is known as oats. Corn is known by that name in England while in America it is known as maize.
Certain genes/cells are activated/turned on (how ever you want to word it)
Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence. The method of reading the order is called stratigraphy (layers of rock are called strata). Relative dating does not provide actual numerical dates for the rocks.
Answer:
Neutrophils represent the first line of defence in response to invading microbes, by phagocytosis of pathogens and/or release of antimicrobial factors contained in specialised granules.
