Homework Answers
Answer:
a). The frequency of the red allele = fr(R) = 0.62
Explanation:
Explanation:
Red guppies (RR)= 724 – (216 + 126) = 382
Blue guppies (rr) = 216
Purple guppies (Rr) = 126
RR 328 = 382 * 2= 764 R alleles
rr 216 = 216 * 2 = 432 r alleles
Rr 126 = 126 R & 126 r alleles
Total alleles = 764 + 432 + 126 + 126 = 1448
Total R alleles = 764 + 126 = 890
Frequency of R allele = 890/1448 = 0.62
Total r alleles = 432+ 126 = 558
Frequency of r allele = 558/1448 = 0.38
b).
The expected frequency of the red genotype = fr (RR) = 0.62 * 0.62 = 0.38
The observed frequency of the red genotype = 382 / 724 = 0.53
Add Answer to:
In a population of guppies living in a stream there is a color polymorphism. Homozygous tropical...
2) In a population of guppies living in a tropical stream there is a color polymorphism....
2) In a population of guppies living in a tropical stream there is a color polymorphism. Homozygous individuals have either blue or red stripes, depending on the allele they carry. Heterozygotes have purple stripes. You sample 724 guppies from the pond. 216 are blue, and 126 are purple. a) What is the frequency of the red allele in your sample? b) What is the frequency of the red genotype in your sample'?
1. You are studying a color polymorphism in a population of soapberry bugs. A single gene...
1. You are studying a color polymorphism in a population of soapberry bugs. A single gene controls color variation; individuals with at least 1 copy of the R allele at this locus are red while individuals of the rr genotype are white. You know that this population satisfies the conditions for Hardy-Weinberg Equilibrium, and that 64% of the population shows the red phenotype. What is the frequency of the R allele? Show your work. 2. Male Trinidadian guppies use bright...
Male Trinidadian guppies use bright red patches of color to attract mates. Your colleague has recently...
Male Trinidadian guppies use bright red patches of color to attract mates. Your colleague has recently sequenced 400 individual guppies at the opsin gene that controls sensitivity to red wavelengths in light. He has found a new variant of this gene that increases sensitivity to red in his samples. Unfortunately, a computer malfunction has scrambled his data and he no longer knows which alleles come from heterozygotes or homozygotes. Based on his recods, 80 of the 800 alleles sequenced are...
1) Select the true statements about dominant and recessive genes, assuming complete penetrance of the genotype....
1) Select the true statements about dominant and recessive genes, assuming complete penetrance of the genotype. Circle all that apply. (1.5) For an offspring to be phenotypically dominant for a trait, at least one parent will show the trait. For an offspring to be phenotypically recessive for a trait, at least one parent will show the trait. In incomplete dominant or codominant traits, heterozygotes will have a different phenotype than either homozygote. If both parents show a recessive trait, then...
A population of flour beetles has 1000 individuals. Normally the beetles are red in color; however,...
A population of flour beetles has 1000 individuals. Normally the beetles are red in color; however, this population has a utation in the gene for body color that results in black beetles that are designated by the rr genotype. Red body color is dominant to black so the genotypes RR and Rr result in red beetles. Assume the population is in Hardy-Weinberg equilibrium, with a 50% frequency of each allele for body color. A) --- what is the frequency of...
In a population of 100 jellyfish the gene for body color (blue or purple) is controlled...
In a population of 100 jellyfish the gene for body color (blue or purple) is controlled by a single diploid gene. The allele for blue (B) is dominant over the allele for purple(b), 43 jellyfish in the population are purple. a. What is the frequency of the dominant allele (B)? b. What is the heterozygous genotype frequency (Bb)? c. How many homozygous dominant jellyfish are there in the population?
Determining if allele frequencies are changing from one generation to the next (microevolution) from the number...
Determining if allele frequencies are changing from one generation to the next (microevolution) from the number of individuals of each genotype present: The following steps are used to determine if allele frequencies are changing: Calculate Allele frequency from the number of individuals of each genotype Calculate expected genotypic frequencies and individuals in a population from allele frequencies: Test the goodness of fit between the data and the Hardy Weinberg equilibrium model generated expectations. The following problems are the calculations used...
The occurrence of the NN blood group genotype in the US population is 1 in 400,...
The occurrence of the NN blood group genotype in the US population is 1 in 400, consider NN as the homozygous recessive genotype in this population. You sample 1,000 individuals from a large population for the MN blood group, which can easily be measured since co-dominance is involved (i.e., you can detect the heterozygotes). They are typed accordingly: BLOOD TYPE GENOTYPE NUMBER OF INDIVIDUALS RESULTING FREQUENCY M MM 490 0.49 MN MN 420 0.42 N NN 90 0.09 Using the...
1. You are studying a population of sandblossoms (Linanthus parryae) that has individuals with blue and...
1. You are studying a population of sandblossoms (Linanthus parryae) that has individuals with blue and white flowers. The allele for white flowers (A) is dominant to the allele for blue flowers (a). In the population you survey, 91 out of 100 individuals have white flowers. Based on this information: a. Calculate the frequency of the A and a alleles. b. Calculate the numbers of each genotype. 2. A population of snapdragons (Antirrhinum hispanicum) has two additive alleles for flower...
2. Alleles D and L are codominant alleles that define fur color in Madagascar lemurs. Lemurs...
2. Alleles D and L are codominant alleles that define fur color in Madagascar lemurs. Lemurs that are homozygous for allele D (genotype DD) have dark brown fur. Lemurs that are homozygous for the L allele (genotype LL) have very light brown fur. The DL heterozygotes are generally light brown, but they have a dark patch or a collar around their neck. Among the 600 Lemurs that you studied on Madagascar, the distribution of genotypes was as follows: Dark brown...
2) In a population of guppies living in a tropical stream there is a color polymorphism. Homozygous individuals have either blue or red stripes, depending on the allele they carry. Heterozygotes have purple stripes. You sample 724 guppies from the pond. 216 are blue, and 126 are purple. a) What is the frequency of the red allele in your sample? b) What is the frequency of the red genotype in your sample'?
2. Alleles D and L are codominant alleles that define fur color in Madagascar lemurs. Lemurs that are homozygous for allele D (genotype DD) have dark brown fur. Lemurs that are homozygous for the L allele (genotype LL) have very light brown fur. The DL heterozygotes are generally light brown, but they have a dark patch or a collar around their neck. Among the 600 Lemurs that you studied on Madagascar, the distribution of genotypes was as follows: Dark brown...
Most questions answered within 3 hours.
-
Linear programming is an excellent technique yet is not applied
nearly enough in the “real world.”...
asked 7 minutes ago -
What three alkenes yield 3-methylpentane on catalytic
hydrogenation?
asked 7 minutes ago -
In JAVA Create a program with an array with the following
data:
50 12 31 76...
asked 10 minutes ago -
Using a hormone of the hypothalamic-anterior pituitary axis,
describe or diagram how negative feedback loops regulate...
asked 8 minutes ago -
1,1-dimethylcyclorohexane reacts with single bromine atom
asked 31 minutes ago -
The completed Lewis structure of CO2 contains a total
of 0,1,2,3,4,5,6,7,8 covalent bonds
and 0,1,2,3,4,5,6,7,8 lone pairs.
NOTE:...
asked 37 minutes ago -
A 0.0510 M solution of an organic acid has an
[H+] of 7.50×10-4M .
What is...
asked 34 minutes ago -
what is the profit-maximizing output condition that a
monopolistically competitive firm must satisfy? a) price charged...
asked 39 minutes ago -
Consider the set of ordered pairs shown below. Assuming that the
regression equation is y=3.513+0.429x and...
asked 1 hour ago -
1. (A) Write two
structural (constitutional)
isomers of C4H8F2?
Please show all of
the
asked 1 hour ago -
Objective: Practice converting a Boolean logic
expression into it’s truth table and to show the implementation...
asked 59 minutes ago -
1) Name the three holes located in the greater wing of the
sphenoid bone in order...
asked 1 hour ago