please help!!
Use this information to answer the following questions).
The Rh (Rhesus) factor is a protein antigen on red blood cells. Individuals possessing this factor are Rh positive, and those lacking it are Rh negative. The Rh positive allele is dominant to the Rh negative allele. These data on the Rh factor are from a sample of a typical population.
Rh positive Rh negative
Number
1260
240
Percentage 84%
16%
The frequency of the Rh negative (recessive allele) in this population is
1) 0.24
® 2) 0.16
3) 0.40
4) 0.30
frequency of the Rh positive (dominant allele) in this population is
• 1) 0.40
• 2) 0.48
• 3) 0.60
4) 0.84
What percentage of this population would be heterozygous genotype for Rh factor?
1) 84%
• 2) 60%
3) 48%
4) 36%
the factors influencing gene frequencies remain the same, what percentage of the next generation would be expected to be homozygous genotype Rh positive?
• 1) 16%
• 2) 84%
• 3) 48%
4) 36%
the factors influencing gene frequencies remain the same, what percentage of the next generation would be expected to be homozygous genotype Rh positive?
• 1) 16%
• 2) 84%
• 3) 48%
4) 36%
heterozygous genotype for sickle-cell anemia has little survival value for North American blacks because
• 1) malaria is uncommon in North America
2) the frequency of the sickle-cell allele is declining.
3) immunization programs have nearly eliminated this disease.
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4) the sickle-cell allele is being transmitted to the non-black population.
Use the following information to answer the next two questions.
Some small pools in Death Valley, California, are home to different species of pupfish. These fish have inhabited the pools since the lake that used to cover the area began to dry up about 10 000 years ago.
Each pool contains a different species of pupfish that has evolved from the ancestral stock.
This is likely due to
1) geographic isolation and evolutionary equilibrium.
1/
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2) favorable mutations and hybridization.
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3) genetic drift and natural selection.
4) reproductive isolation and constant gene frequencies.
The limited reproductive range of these fish is likely due to
• 1) inbreeding of individuals within a pool.
• 2) the speed with which mutations can be transmitted throughout the population.
3 natural selection of those best suited to the environmental conditions.
4) geographic isolation.
Lupinus tidestromii and Lupinus gracilentus belong to the legume family ot plants. L. tidestromiis found in the coastal beach habitat and flowers from May to June, whereas L. gracilentus is found in subalpine habitats above 3000 m and flowers from July to August.
Which statement describes these lupines!
• 1) They are both reproductively and geographically isolated.
• 2) They are the result of acquired characteristics.
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• 3) They are reproductively isolated.
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4) They are geographically isolated.
Use this information and diagram to answer the following question(s).
The circles and letters represent four populations that freely interbreed where the circles overlap. The arrows indicate the exchange of genes between the populations. Interbreeding does not occur where the circles do not overlap. (see diagram below)
How many species are shown in the above diagram?
© 1) 3
O 2) 1
О 3) 2
О 4) 4
How many species would there be if Population B became extinct and considerable time elapsed?
O 1) 3
2
• 3) 1
• 4) 4
How many species would there be if Population C became extinct and considerable time elapsed?
O 1) 2
• 2) 3
• 3) 1
• 4) 4
Thank you!!!
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