Answer:
A) 0.1 a, 0.9 A
Explanation:
According to the given information, all the individuals in the founder population had free earlobes. Since the allele for the free earlobes (A) is dominant over the one for the attached earlobes (a), the genotype of each of the homozygous dominant founder individual would be "AA". Humans are diploid and one individual has two alleles for each gene in its genome. Total number of alleles for the earlobe in the founder population = 10 x 2 = 20.
Frequency of dominant allele, A in the founder population = total number of homozygous dominant individuals x 2 + the total number of heterozygous genotype / total alleles for the earlobe in the population. There were 8 homozygous dominant and 2 heterozygous dominant individuals in the population.
So, frequency of dominant allele = 8 x 2 + 2 / 20 = 16 + 2 / 20 = 18/20 = 0.9
Since p+q=1; frequency of recessive allele "a" = 1-p = 1-0.9 = 0.1
Dozens of tower cranes dot DC's skyline, and so many of them are building new high-rise apartments that the District now ranks ninth among US cities with the most housing units under construction. It sure looks like a lot of new housing supply is being built, and certainly plenty of new luxury apartments within the District. However, the downtown high-rises under construction only tell half the story of Greater Washington's housing growth story.
While all those cranes are easy to see from afar, what isn't immediately apparent from the airport (but might be from a plane) is that many fewer acres of the countryside around us are being bulldozed for subdivisions–which for the past century has been where most lower-cost, low-rise housing was built. As a result, the region as a whole isn't building enough housing for our rising population.
Reducing sprawl is good, but we haven't built enough housing in city cores to meet demand
Fewer than half as many single-family houses are being built at the suburban fringes of Greater Washington every year, compared to the region's long-range average. Taken together, the single-family houses that aren't being built around Greater Washington each year would cover four square miles–an area the size of Rock Creek Park. The slower pace of suburban development over the past ten years has meant tens of thousands of acres of farms and forests around our region haven't been bulldozed for subdivisions and strip malls.
Hi there!
The cell theory states that all cells can make duplicates of themselves. They do this by dividing themselves in half, until they are two cells.
The cell which divides itself in half is called the parent cell, and the cells that are produced from this are called daughter cells.
The origin of the cell, would most likely be the parent cells.
Hope this helps!
~DL
The presence of inorganic molecules is the meteorite condition in space similar to what was likely present in Earth's early atmosphere.
The earth initial atmosphere in its early form was too reducing and it was made up entirely of gases such as carbon monoxide, ammonia, methane, nitrogen and other gases.
This atmosphere did not have free oxygen, since it was the result of the mixture of metals, hydrogen and other chemical elements.
The high temperatures, ultraviolet rays and electrical discharges in the early atmosphere would have caused chemical reactions of the elements to form primitive organic molecules.
Meteorites are fragments of solid matter that contain a record of the chemical substances that existed in the early Solar System.
The most predominant gases still found in the space are hydrogen and helium.
Therefore, we can conclude that hydrogen and the presence of inorganic molecules are the initial elements that make up the Earth's early atmosphere and that they are conditions that are present in the space and so in the formation of meteorites.
Learn more about Earth's early atmosphere here: brainly.com/question/18289168
