subject
Biology, 16.04.2020 01:33 mrsrobinson1014

Suppose there are 50 couples with the same blood type and hemoglobin genotypes. They live on a small, isolated Pacific island on which very few mosquitoes have been identified. All the individuals are heterozygous for type A blood and have sickle cell trait. The 50 couples had 224 children over the years. The children were all tested for blood type and for the presence of the sickle cell allele.

Here are the results. Testing Results Blood Test Results Number of Children Type A, normal RBCs 48 Type O, normal RBCs 18 Type A, sickle cell trait 92 Type O, sickle cell trait 33 Type A, sickle cell disease 27 Type O, sickle cell disease 6 Are these data significant? Explain using a chi-square statistical analysis test.

a. What is χ2 ?

b. Calculate df.

c. Using the critical values table, determine the P value.

d. Interpret the P value as it relates to these data. Explain the significance.

From what you know about hemoglobin, sickle cell disease, and blood type, what selection pressure is acting on this population of children and causing the null hypothesis to be rejected? Explain your answer. (Hint: Look at the actual differences between the observed and expected numbers.)

ansver
Answers: 1

Other questions on the subject: Biology

image
Biology, 21.06.2019 14:00, falabit
How are cellular respiration and photosynthesis different? cellular respiration assists breathing; photosynthesis aids pigmentation. cellular respiration breaks down glucose; photosynthesis creates glucose. cellular respiration creates glucose; photosynthesis breaks down glucose. cellular respiration releases oxygen; photosynthesis releases carbon dioxide.
Answers: 3
image
Biology, 22.06.2019 02:00, amandaestevez030
What would happen if the krill were removed from the food web
Answers: 2
image
Biology, 22.06.2019 03:00, sophiav9780
Where does all the water go? according to the environmental protection agency (epa), in a typical wetland environment, 39% of the water is outflow; 46% is seepage; 7% evaporates; and 8% remains as water volume in the ecosystem (reference: united states environmental protection agency case studies report 832-r-93-005). chloride compounds as residuals from residential areas are a problem for wetlands. suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 60.4; seepage, 73.7; remaining due to evaporation, 26.4; in the water volume, 46.8. (a) compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (round your answer to one decimal place.) mg/l (b) suppose the epa has established an average chlorine compound concentration target of no more than 58 mg/l. does this wetlands system meet the target standard for chlorine compound concentration? yes. the average chlorine compound concentration (mg/l) is too high. yes. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is too high.
Answers: 3
image
Biology, 22.06.2019 14:00, mewings
The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird
Answers: 2
You know the right answer?
Suppose there are 50 couples with the same blood type and hemoglobin genotypes. They live on a small...

Questions in other subjects:

Konu
Health, 26.01.2022 15:50
Konu
Chemistry, 26.01.2022 15:50