The right option is; b. They can prevent new development that would harm established residents.
Zoning laws are laws that are created to specify the areas in which commercial, residential, industrial, or recreational activities may occur. Zoning involves grouping land in a town into zones in which certain land uses are prohibited or allowed. Through zoning, the governments regulate the physical development of land and buildings, and restrict how people can use their properties.
Answer:
D
Explanation:
A somatic mutation cannot be passed down generations. The mutation has to be in the gamete (egg or sperm) to be inherited by the offspring. This can occur when the pre-gametic cells incur a mutation during development into a gamete.
Out of the following choices;
<span>a) </span>tail b) DNA c) base plate d) protein coat e) head.
The answer is B. Phosphorus-32 is a radioactive isotope of phosphorus. It is used to label the DNA of the phage because phosphorus is an important element in the structure of DNA and the radioactive phosphorus can be tracked, unlike the naturally-occurring phosphorus. Phosphate groups are critical in the formation of 3’ to 5’ sugar-phosphate backbone bonds between adjacent nucleotides to form DNA.
Answer:
C) production of sperm and eggs
Explanation:
Sperms and eggs are the male and female gametes respectively. Formation of sperms and egg cells require meiotic cell division. Meiosis in sperm mother cells and egg mother cells reduces the chromosome number of half in the sperms and eggs. Meiosis also adds new gene combinations in these gametes by the process of crossing over.
Mitosis cannot reduce the chromosome number to half in the sperms and eggs. Absence of crossing over in mitosis leads to the formation of genetically identical progeny cells from mitosis.
Hence, mitosis can not form sperms and egg cells. If it does, the sperms and egg cells would not have genetic variations and there would be doubling of chromosome number with each round of sexual reproduction.