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sciencetriofosh sciencetriofosh
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10 years ago
1. If a researcher samples 10000 drosophila from this popuulation the number of flies expected to be homozygous dominant for body colour
A. 6400
B. 400
C. 3200
D. 9600



2. A population of rattlesnakes contained 1000 individuals at the beginning of a year. During the year, the population changed in the following ways: Births 106, deaths 53, immigration 42, and emigration 15. The population occupied an area of 60 hectares.

Calculate the rattlesnake population density at the beginning of the year and the per capita growth rate for the rattlesnake population over.
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#1
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10 years ago
Quote from: sciencetriofosh (10 years ago)
1. If a researcher samples 10000 drosophila from this popuulation the number of flies expected to be homozygous dominant for body colour
A. 6400
B. 400
C. 3200
D. 9600

You're missing information here.

Quote from: sciencetriofosh (10 years ago)
2. A population of rattlesnakes contained 1000 individuals at the beginning of a year. During the year, the population changed in the following ways: Births 106, deaths 53, immigration 42, and emigration 15. The population occupied an area of 60 hectares.

Calculate the rattlesnake population density at the beginning of the year and the per capita growth rate for the rattlesnake population over.

https://biology-forums.com/index.php?topic=93829.msg263707#msg263707
Mastering in Nutritional Biology
Tralalalala Slight Smile
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#2
10 years ago
For the first one, you forgot to post this: Use this, In a randomly mating population of Drosophila, 4% of the flies have black bodies (an
autosomal, recessive trait) and 96% have brown bodies. This population is assumed to be in
Hardy–Weinberg equilibrium.)
So remember the p+q equation. You know 4% or .04 is recessive phenotype (q) so square root of that will be the genotype allele frequency so you subtract that number from 1 to get the dominant allele frequency. Square that to get the phenotype frequency and multiply that by 10000. You should get A. 6400
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