Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- Many genetic disorders, such as cystic fibrosis and sickle-cell disease are due to mutations in a recessive allele. You have sampled an isolated population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%. Using that 36%, calculate: 1f. the frequency of the dominant phenotype if "A" is completely dominant over "a” (round to the nearest hundredth)arrow_forwardOnce upon a time there was a population of hippies living in an isolated commune called Gone. They had been there for generations, and all members were homozygous for a gene that gave them a preference for crafting necklaces out of green beads, so that every individual had the genotype GG at this locus. In another isolated commune, called Yonder, was a population of hippies that had a genetic propensity for making necklaces out of yellow beads, and everyone was homozygous for a different allele at the same genetic locus; their genotype was YY. Last year (prior to our current social isolating) everyone repaired their VW buses, and a giant gathering in celebration of the 50th anniversary was held at the Oregon Country Fair. The next few questions will ask you about these two populations that came together at the fair.arrow_forwardIn a population sample the following genotypes were observed: 150 AA, 700 AB, 150 BB. What are the allele frequencies? There is insufficient information to determine O 0.15 A, 0.15 B 0.15 A, 0.7 AB, 0.15 B O 0.5 A, 0.5 Barrow_forward
- In a population experiencing no selection, genetic drift, gene flow, mutation or non random mating, the allele frequencies at a locus where the R allele is dominant over the r allele, are as follows. R= 0.3 r=0.7 What is the expected heterozygosity of the population at that locus?arrow_forwardA gene for flower color in pea plants has two alleles, A and a. Given the following genotype frequencies, which of these populations shows evidence of possible inbreeding? AA-0.38, Aa-0.22, aa-0.40 O AA-0.25, Aa-0.5, aa-0.25 O AA-0.01, Aa-0.18, aa-0,81 O AA-0.12, Aa-0.64, aa-0.24 O AA-0.09, Aa-0.42, aa-0.49arrow_forwardA population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1 A2 genotype, and 123 have the A2A2 genotype. What is the allele frequency of A1? Answer to 2 decimal places.arrow_forward
- If one parent is dominant tall, and one parent is mixed hybrid, what is the phenotype in percentage (%) for the possible offspring? Use the reference sheet below to answer.arrow_forwardA population of dragons or Varanus dragonus has two alleles B and P encoding for phenotypes blue and purple scales, is dominant over B. You have population of 345 individuals. PP = 100, BP; =90 , and BB = 155 . What is the frequency of the P allele? Please use and round to four decimal points.arrow_forwardSnow geese (Chen caerulescens) come in two color types, white “snows” and “blues” with dark bodies. A single gene controls coloration, where the dark (“blue”) allele (D) is dominant. Another flock of geese is determined to have observed and expected numbers of individuals recorded in the table below. Observed Expected DD 392 303.78 Dd 155 327.15 dd 172 88.08 Determine whether the flock is in Hardy-Weinberg equilibrium by performing a chi-square test. Show all of your work. Use the following table to determine the critical value to which you’ll compare your calculation of the chi-square statistic. Degrees of freedom P = 0.05 1 3.841 2 5.991 3 7.815arrow_forward
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