Answer:
The correct answer is A. stabilizing selection
Explanation:
Stabilizing selection is one type of natural selection that occurs when the population having non-extreme traits are stabilized. It results in overexpression of a particular trait in a population. Here most average individual gets selected.
So as the stabilizing selection favors the middle phenotype and not extreme phenotypes it decrease the genetic variation. So here individuals who are having extremely long snout are selected therefore a particular trait is selected and overexpressed in the population. So it is an example of stabilizing selection.
Answer:
Option D, Tdap today; Td in 4 weeks; Td 6 months after the second dose
Explanation:
In general, Tdap is given before Td to all those adults who have never been administered with Tdap earlier.
Also as per the publication of CDC, any individual who is of 7 years or older than this and has never been vaccinated by Td needs following schedule of medication
a) First primary dose
b) After the first primary dose the second primary dose of Td must be given in 4 weeks and
c) The third primary dose must be given after 6 to 12 months.
Hence, option D is correct
Answer:
From the frequent use of antibiotics.
Explanation:
If we limited the amount of antibiotics used, bacteria wouldn't be resistant. When becteria become resistant to an antibiotic they will also become resistant to higher doses of antibiotics. The bacteria won't become effected no more by the antibiotics.
Answer&Explanation:An individual with an autosomal dominant disorder, has a single mutant gene unless when their both parents are affected.
A person will have an autosomal dominant disorder if only a single parent is affected and if parent have autosomal dominant disorder only there is a 50% of inheriting a mutant gene.
In autosomal recessive disorders a person will get Ill if they inherit both mutant genes from both parents who are carriers . This person will be homozygous for the gene and will be affected by the disorder and this is highly likely to happen in their baby since they are both the carriers of this disorder.
