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- 1. A sample of 600 individuals from a population is examined for the presence of the HindIII polymorphism in an autsomal Sca gene. There are two alleles of Sca gene, A and a. The results are 14 individuals are AA, 212 are Aa, 374 are aa. Please answer the following questions accordingly? How many alleles are present in the gene pool in the sample population fort he Sca gene? What are the genotype frequencies? What are the frequencies of A and a alleles? What are the expected numbers of the three genotypes, assuming randomThe phenomenon in which chance events cause unpredictable changes in allele frequencies is called: a. gene flow. b. genetic drift. c. inbreeding. d. balanced polymorphism. e. stabilizing selection.Variation in _____ is the basis of variation in traits. a. karyotype b. the DNA sequence c. the double helix d. chromosome number
- If a population of skunks includes some individuals with stripes and others with spots, would you describe the variation as quantitative or qualitative?Which of the following represents an example of qualitative phenotypic variation? a. the lengths of peoples toes b. the body sizes of pigeons c. human ABO blood types d. the birth weights of humans e. the number of leaves on oak trees1. What is genetic drift and identify two ways in which it can occur. 2. If genetic disease are so bad, why do they stay in the population? Thank you!!
- 2) Whichofthefollowingarenon-demographiccharacteristicsofstudypopulations? A) Sex B) Weight range C) Ethnicity D) Location of residency55. Which of the following best describes anthropological thought on the concept of race? a) Race is a culturally defined concept based upon a handful of arbitrarily selected biological characteristics. b) Biologically, races cannot be validated because there is more variability within any racial group than there is among racial groups. c) Characteristics used to classify people into racial groups – such as skin color, nose form, folds of skin of the eye – each have different geographic distributions with one another and do not follow our racial classifications. d) all of the above. e) none of the above.There is a population of cats and 16% of the cats this population show a recessive trait. a. What is the frequency of the recessive allele? b. What is the frequency of the dominant genotype? c. What is the frequency of cats with the heterozygous genotype?
- Stabilizing selection on a trait tends toa. make the trait more extreme.b. reduce variability in the trait.c. decrease the frequency of alleles associated with the trait.d. result in elaborate male ornaments.6) If a sudden frost kills many small birds in a population, but only a few medium- and large-sized ones, which type of selection is likely operating? a.Intersexual b.Directional c.Disruptive d.StabilizingIn a group of patients, it is reported that drug p is effective only in individuals of the recessive phenotype. if q = .6 and p to .4 what fraction of patients would benefit from the treatment. Assume that the population is in HW equilibrium? a. .25 b. .36 c. .4 d. .6