Manx cats possess a heterozygous mutation resulting in a shortened or missing tail. If they
receive 2 of these recessive alleles, it acts as a recessive lethal. Let’s say that this allele has a
frequency of 0.15 in a population due to genetic drift in a small population. Based on natural
selection, would you expect the allele frequency to change in the next 3 generations?
Thoroughly explain your results.
The chance of allele frequency to change in the next 3-generations is totally dependent upon the number of offsprings in all the three generations as we are provided with the data of frequency of 0.15 in a population. So without knowing the number of offsprings in all three generations, we cannot say that there would be change in allele frequency.
Manx cats possess a heterozygous mutation resulting in a shortened or missing tail. If they receive...
In cats, a condition known as Manx is a dominant disorder resulting in abnormal tail development. Manx cats are heterozygous for the Manx gene, whereas cats with normal tail lengths possess two recessive alleles. The homozygous dominant condition is lethal. Is it possible to have a pure breeding Manx cat? Cross two Manx cats and prove your answer.
Two people who are “carriers” of (heterozygous) for Tay Sachs disease marry and plan a family. What is the probability that a child from this union will suffer from Tay Sachs disease. (Recall that this is an autosomal recessive disorder, that is, homozygous recessives have the disease.) a. Zero b. 0.25 c. 0.5 d. 0.75 e. 1.0 6. At Hardy-Weinberg equilibrium, heterozygotes are the most common genotype in the population when- a. b. c. d . p> 0.67 q>0.67 and...
In the case of directional selection, if the advantageous allele (b) is recessive and a less advantageous allele (B) is dominant: A. b will be lost in the population because the dominant allele will increase in frequency by natural selection B. b will increase in frequency at the same speed as if it was a dominant advantageous allele, because what matters is the coefficient of selection and not if the allele is dominant or recessive C. b will increase in...
Plase hlp answer these questions:
White wool in sheep is controlled by a dominant allele R, and black wool by the recessive allele r. In an isolated population of 6530 sheep, 514 are black, 4981 are heterozygous, 1035 are homozygous white. When will this population be expected to reach Hardy-Weinberg equilibrium? in the next generation in two generations it already is in equilibrium impossible to tell it will not reach equilibrium A population has the following genotypic distributions: A^M A^M...
A plant called blue-eyed grass normally produces blue flowers. However, plants producing white flowers also occur, because an allele for the gene coding for the protein that produces the blue pigment is non-functional. This white-flowered allele (W) is dominant to the blue-flowered allele (w), but generally occurs at very low frequency in populations. Suppose you crossed a homozygous dominant plant with a homozygous recessive plant, and the result is 16 seeds. If you plant these, assuming simple Mendelian genetics, how...
The Kermode Spirit bear is an alternate phenotype of the species Ursus americanus (black bear) in British Columbia that has striking white fur. It was determined in 2001 that a single nucleotide change from G to A results in the replacement of Tyrosine with Cysteine at codon 289 in the melanocortin 1 receptor gene (mc1r; Ritland et al. 2001 Current Biology). This allele (W2) is recessive to the wildtype allele (W1), and occurs as a novel mutation in 1 out...
Which of the following statements regarding the Hardy-Weinberg Equation is TRUE? Answers: It can only be used when allele and genotype frequencies remain constant across generations in a population It can only be used when allele and genotype frequencies change across generations in a population It has no assumptions It mathematically shows how recessive alleles in a population decrease over time It reveals when allele frequencies change over time in a population Assuming Hardy-Weinberg Equilibrium, what percentage of individuals in...
QUESTION 2 Climate change is a threat to the existence of many species. Which of the following limits to natural selection hinders the adaptation of species to the new climate conditions? The developmental plans of plants and animals are too complex. They cannot cope with the warmer temperatures. Mutations happen so frequently that beneficial alleles change before natural selection can substantially increase their frequency Many species not have gene variants in their gene pool that are beneficial in higher temperatures. Climate change happens so...
Below is a list of several scenarios that have occurred in our natural world. Read the situation carefully and identify the type of selection taking place. Explain why you choose your answer. Stabilizing selection Genetic Drift Directional selection Heterozygote Advantage Disruptive selection Bottleneck Founder effect Underdominance A) After a chemical plant moves into town near a meadow, local downwind populations of plants begin to adapt to the resulting air pollution. Scientists document that the acid rain tolerance of several plant...
lab topic 13
watch on colony in the margin of your loba characteristics observed Repeat steps to with two additional species You partnerid e three dillerent species Observe Color Plates 15, 17. und 18. Describe the shape ang face, and color of these bacterial species c Results Labo 1. Complete Table 13.1 at the bottom of the pagesger F 1 to describe the three bacterial cultures you observed Ahora Discussion surfact characteristics found in the lab partner barved by you...