WorksheetsPopulation genetic
Total questions: 15
Worksheet time: 56mins
A gene pool consists of ..
all the alleles selected by natural selection
all the alleles present in a population
the entire genome of a sexually reproducing organism
the frequencies of the alleles for a gene locus within a population
In a rat population that is in equilibrium, the frequency of recessive white fur allele is 0.25. Calculate the frequency of the heterozygous rat.
0.188
0.5
0.375
0.75
You sample a population of butterflies and find that 42% are heterozygous for a particular gene. What would be the frequency of the recessive allele in this population?
0.30
0.49
0.70
Allele frequency cannot be estimated from this information.
In a population of cows at genetic equilibrium, 1500 cows have dominant grey coat, while the remaining 500 cows have recessive white coat. If all the white coat cows were sold and the remaining cows were left to breed randomly, what is the number of white coat cows in the next generation of 1000 cows?
109
250
442
500
A farmer has 2000 cows. A total of the 1500 cows are brown coated and the rest are white coated. Allele B for the brown coat is dominant while allele for b for the white coat is recessive. Assume that the population of the cows is at genetic equilibrium and bred randomly.
Calculate the genotype frequencies in the F1 generation if the cows are left to bred randomly.
p2 = 0.25 2pq = 0.5 q2 = 0.25
p2 = 0.5 2pq = 0.5 q2 = 0.5
p2 = 0.5 2pq = 0.25 q2 = 0.5
Genotype frequency cannot be estimated from this information.
In a population of cows at genetic equilibrium, 750 cows have long horns (dominant trait), while remaining 250 cows have short horns (recessive traits). What is the frequency of dominant allele?
0.25
0.5
0.67
0.75
Use the following information to answer the questions below.
Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.
What is the percentage of homozygous dominant in this population?
10 %
56 %
74 %
98 %
Use the following information to answer the questions below.
Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.
What is the number of individuals in this population who are carriers?
100
200
150
250
Use the following information to answer the questions below.
Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.
What is the frequency of carrier?
0.02
0.20
0.32
0.48
Use the following information to answer the questions below.
Albinism is a hereditary disease due to the absence of the skin pigment melanin. The allele for albinism is recessive to the allele for normal pigmentation. One person in 10,000 is an albino.
What is the frequency of the dominant allele?
0.01
0.10
0.09
0.99
If a population experiences no migration, is very large, has no mutations, has random mating, and there is no selection, which of the following would you predict?
The population will evolve, but much more slowly than normal.
The makeup of the population's gene pool will remain virtually the same as long as these conditions hold.
The composition of the population's gene pool will change slowly in a predictable manner.
Dominant alleles in the population's gene pool will slowly increase in frequency while recessive alleles will decrease.
