Hardy Weinberg: Biology
posted by Allie .
Can someone explain how to answer these questions given the different variables given? I have a test soon.
Dr. Martin Brenner and his team have built a space ship which can travel at the speed of light
(186,000 miles per second) and travel to parallel dimensions. Dr. Brenner is interested in the
population genetics of a unique species in the Upside Down dimension. Using his space ship,
he travels to the past 11 million years to execute his research and study a population of
Demogorgon draconems, the other world’s only species. It weighs 7000 kg (15,432 lb) and
has six stages of development from larva to adult. The adult species skin color changes from
blue (dominant) and grey (recessive). Assume the population is in HardyWeinberg
equilibrium. Dr. Brenner observed 111 blue Demogorgon draconems and 69 grey
Demogorgon draconems during his study.
A. Calculate the frequency of the blue allele in the population?
B. How many of the animals were heterozygous?
C. Calculate the frequency of the homozygous recessive genotype?
On a second trip to the Upside Down, he observed 1001 Demogorgons.
A. How many do you think will be grey assuming HardyWeinberg equilibrium?
B. How many do you think will be blue assuming HardyWeinberg equilibrium?
C. How many of the blue animals are homozygous for the dominant allele?

Blue are hetro, and homozygous.
grey are homo,
BgxBg, freq of BB is .25, gg is .25, and Bg is .50 at equlibrium.
a. freqBlue=111/180
b. and 1/3 the blue(BB, Bg,Bg)+all grey are home=111/3+55= ....
c. freqHomorecessive=2/3*111+69
a. 1001*.25
b. 3/4*1001
c. 1/3*3/4*1001
https://en.wikipedia.org/wiki/File:HardyWeinberg.svg 
For Part 1:
A. I did 111+69=180... 69/180=0.383. Square root that to get 0.619. Plug in that answer for q into eq'n p+ 0.619= 1. P=0.381
So, the rest of the problem would have different answers. So which one is correct?
In a population ofDemogorgon draconemsthat are mating randomly,11percent of the Demogorgonshave purple scales(purple is anautosomal recessive(p) trait) and 89 percent have yellow scales(the normal colorP). Assume the population is inHardyWeinberg equilibrium.A.Calculate theallelic frequencies ofPandpand B.Calculate the genotypic frequencies ofP/ PandP/ p? 
The other question is the second problem. Not sure how to derive at the answer. Could you help with this as well?

a, p=0.38
b, 2pq=0.48, 0.48*180=87
Respond to this Question
Similar Questions

Biology
DNA was collected from 100 people and subjected to a restriction digest with BamHI. These samples were then analyzed using Stouthern blots. Three different patterns of hybridization were seen on the blots: 56 samples showed a single … 
Need Preperation Help
I have a test on Hamlet soon and I'm just wondering if anyone know sites that have testlike questions? 
ap biology
we are looking at the Hardy weinberg equilibrium theory and we were given fifty problems to work over the break and even though i have answered most of them there is one that has be taken a long time because I am not sure if it can … 
biology
A population shows 81% have the dominant phenotype. If HardyWeinberg conditions are met, what will be the genotypic frequencies in the next generation? 
AP Biology
I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in HardyWeinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage … 
ryan
You propose to build a space ship that allows the entire population of the United States (280 million) to leave earth. Your plans allocate an average space of 1,000(=10*10*10) cubic feet to each person. You space ship is going to have … 
stats
In each of the four examples listed below, one of the given variables is independent (x) and one of the given variables is dependent (y). Indicate in each case which variable is independent and which variable is dependent. I. Gas consumption; … 
Biochemistry, Biology, Chemistry
An enzyme works on two substrates, S1 and S2. Its Km for S1 is 100mM and its Km for S2 is 10mM. Based on this information, answer the following questions: 1. For a given [E] will it have a higher Vmax for S1 or S2? 
College Physics
Although they don’t have mass, photons—traveling at the speed of light—have momentum. Space travel experts have thought of capitalizing on this fact by constructing solar sails—large sheets of material that would work by reflecting … 
Biology
In a population of Mendel's garden peas, the frequency of greenflowered plants (genotype aa) is 49%. The population is in HardyWeinberg equilibrium. What are the frequencies of the AA and Aa genotypes?