In a population of the flour beetle, Tribolium, the mean weight of pupae is 200 mg....
In a population of the flour beetle, Tribolium, the mean weight of pupae is 200 mg. The heritability of pupae weight is 0.25. If individuals with a mean pupa weight of 240 mg are selected to breed, what is the expected average pupa weight among the progeny?
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In a population of the flour beetle, Tribolium, the mean weight
of pupae is 200 mg....
Artificial selection for fruit size (mean fruit weight per plant) is carried out on a population ...
Artificial selection for fruit size (mean fruit weight per plant) is carried out on a population of tomatoes. In the population as a whole, mean fruit weight per plant is 75 g. Plants with mean fruit weight of 100 g per plant are selected and mated at random to produce the next generation. (a) If narrow-sense heritability of mean fruit weight is estimated at 60%, what is the expected mean fruit weight per plant after 1 generation of selection? (b)What...
The mean yield of a particular variety of grain crop is 200 bu/acre (bushels per acre)....
The mean yield of a particular variety of grain crop is 200 bu/acre (bushels per acre). If the top yielding 20% of the plants are selected for breeding and mated randomly among themselves, this is equivalent to a selection differential S of S = 37 bu/acre. What is the expected mean yield of the progeny of the selected parents if the heritability of yield is 0.428? (hint: don’t forget that the response (R) to selection represents the new value of...
A population of a particular breed of rabbit has a mean weight of 5 pounds, with...
A population of a particular breed of rabbit has a mean weight of 5 pounds, with a standard deviation of 4 pounds. If a sample of 36 rabbits of this particular breed is randomly selected, answer the questions and round your final answers to 4 decimal places. (a) What is the probability that the rabbits will have a mean weight of 6 pounds or greater? (b) 35% of the rabbits have a mean weight that is less than what value?...
The population mean value of swimming speed in catfish is 0.5m/sec. If the heritability of swimming...
The population mean value of swimming speed in catfish is 0.5m/sec. If the heritability of swimming speed is 0.4 what is the expected swimming speed of progeny from a group of catfish that have an average swimming speed of 2m/sec?
An entomologist is trying to increase body hairs in Drosophila. Her original population has a mean...
An entomologist is trying to increase body hairs in Drosophila. Her original population has a mean of 7.5 hairs, and she selects flies with a mean of 10 hairs to inter-mate and produce his next generation. The mean number of hairs in the resulting population was 9. Could you show me the process on how to do this I just want to double check my work. 1.What is the narrow sense heritability (h2) for number of body hairs in this...
3. A young entomologist is trying to increase body hairs in Drosophila. His original population has...
3. A young entomologist is trying to increase body hairs in Drosophila. His original population has a mean of 7.5 hairs, and he selects flies with a mean of 10 hairs to inter-mate and produce his next generation. The mean number of hairs in the resulting population was 9. a. What is the narrow sense heritability (h ) for number of body hairs in this Drosophila population (show your work)? b. What would have been the mean number of body...
Suppose you have a population of flour beetles with 1,000 individuals. Normally the beetles are red;...
Suppose you have a population of flour beetles with 1,000 individuals. Normally the beetles are red; however, this population is polymorphic for a mutant autosomal body color, black, designated by bb. Red is dominant to black, so BB and Bb genotypes are red. Assume the population is at Hardy–Weinberg equilibrium, with equal frequencies of the two alleles. What would be the expected frequencies of the red and black phenotypes? Select one: a. All red b. 0.5 red; 0.5 black c....
The mean ear length in an adult dog population is 3.0 inches. From this population, a...
The mean ear length in an adult dog population is 3.0 inches. From this population, a group of adult dogs (male and female) with ears that measured 5.0 inches were selected as parents for breeding purposes. The heritability of the adult ear length is 0.5. What is the expected mean adult ear length for the offspring of the selected parents? 3.0 inches 3.5 inches 4.0 inches 4.5 inches 5.0 inches
Assume total cholesterol levels (TChol) are normally distributed with mean μ = 215 mg/dl and standard...
Assume total cholesterol levels (TChol) are normally distributed with mean μ = 215 mg/dl and standard deviation σ = 30 mg/dl for the adult American population. That is, TChol ~ N(215, 302). Total cholesterol values of 240 mg/dl or greater are considered high; and levels in the range of 200 to 240 are called borderline high. a. What proportion of this population do we expect to find with high cholesterol? What proportion do we expect to find with borderline high...
A population of birds has a mean beak-size of 5cm. A drought occurs such that a...
A population of birds has a mean beak-size of 5cm. A drought occurs such that a large beaked birds survived better than small-beaked birds. The large-beaked birds that survived had an average beak size of 7 cm, and their offspring had an average beak size of 6cm. What is the selection differential? 1 2 3 4 None of the abov * Selection differential= large beaked birds that survive – population mean beak sized What is the response to selection in...
A population of a particular breed of rabbit has a mean weight of 5 pounds, with a standard deviation of 4 pounds. If a sample of 36 rabbits of this particular breed is randomly selected, answer the questions and round your final answers to 4 decimal places. (a) What is the probability that the rabbits will have a mean weight of 6 pounds or greater? (b) 35% of the rabbits have a mean weight that is less than what value?...
3. A young entomologist is trying to increase body hairs in Drosophila. His original population has a mean of 7.5 hairs, and he selects flies with a mean of 10 hairs to inter-mate and produce his next generation. The mean number of hairs in the resulting population was 9. a. What is the narrow sense heritability (h ) for number of body hairs in this Drosophila population (show your work)? b. What would have been the mean number of body...
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