In the year 2525. two male and three female space colonists settle on an uninhab
ID: 181044 • Letter: I
Question
In the year 2525. two male and three female space colonists settle on an uninhabited planet. The colonists and their offspring randomly mate for generations All five of the original colonists had free-hanging ear lobes (due to a dominant allele) and three were heterozygous at the gene locus. Note that the recessive condition at this locus results in attached ear lobes. If one assumes that the original colonist population of five was in Hardy-Weinberg Equilibrium for the ear-lobe gene locus, when the planet's population reaches 10,000 how many people do you predict will have attached ear lobes? 0 400 800 900 10,000 The scenario described in the above paragraph is a neat example of how can act as a mechanism of micro evolutionary change gene flow bottleneck effect inbreeding founder effect mutation if two of the original colonists died before they produced offspring, the ratios of genotypes could be quite different in subsequent generations This is an example of: gene flow genetic drift random mating stabilizing selection heterozygosityExplanation / Answer
41 Ans:
All of the five original colonists have free-hanging ear lobes due to a dominant allele
Three colonists were heterozygous at the gene locus
Recessive condition at this locus results in attached ear lobes
Homozygous colonist mate with heterozygous colonist
In first generation becomes all are attached ear lobes and heterozygous colonist. It is mated with another heterozygous colonist next generation produce homozygous recessive.
So the answer is b.400
42 Ans:
Microevolutionary change is present in allele frequencies that occurs over time within a population. This change due to four different process mutation, gene flow, genetic drift and selection.
So the answer is gene flow
43 Ans:
Genetic drift refers to variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not produce.
So the answer is genetic drift.