A Tibetan individual who is heterozygous for the DISCI and EPAS1 loci mates and produces offspring with someone from the Han population. If the Chinese individual is heterozygous at the EPAS1 and heterozygous at the DISC1 locus, what are the phenotypic ratios you'd expect in their offspring? O9:3:3:1 O 1:1:1:1 Based on the data, there are not heterozygous individuals from Tibet or EPASI. All dominant 3:1

A Tibetan individual who is heterozygous for the DISCI and EPAS1 loci mates and produces offspring with someone from the Han population. If the Chinese individual is heterozygous at the EPAS1 and heterozygous at the DISC1 locus, what are the phenotypic ratios you'd expect in their offspring? O9:3:3:1 O 1:1:1:1 Based on the data, there are not heterozygous individuals from Tibet or EPASI. All dominant 3:1

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter13: Patterns In Inherited Traits

Section: Chapter Questions

Problem 6GP: In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele...

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A wild-type fruit fly (heterozygous for gray body color andred eyes) is mated with a black fruit fly with purple eyes. Theoffspring are wild-type, 721; black purple, 751; gray purple, 49;black red, 45. What is the recombination frequency betweenthese genes for body color and eye color? Using informationfrom problem 3, what fruit flies (genotypes and phenotypes)would you mate to determine the order of the body color, wingsize, and eye color genes on the chromosome?
In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele for red flowers (p). An allele for long pollen grains (L) is dominant when paired with a recessive allele for round pollen grain (l). Bateson and Punnett crossed a plant having purple flowers/long pollen grains with one having white/flowers/round pollen grains. All F1 offspring had purple flowers and long pollen grains. Among the F2 generation, the researchers observed the following phenotypes: 296 purple flowers/long pollen grains 19 purple flowers/round pollen grains 27 red flowers/long pollen grains 85 red flowers/round pollen grains What is the best explanation for these results?
Butterflies show 3 phenotypes due to incomplete dominance at the D locus with alleles DY and DB giving green phenotype in heterozygotes and yellow and blue in homozygotes. a) A population of butterflies showed 49% yellow, and 51% blue and green. What percentage of the gametes for the next generation would contain the DB allele? b) In another population only 1% of the butterflies are blue, what is the DY allele frequency? c) If the butterflies were subject to predation by birds that could easily detect blue & yellow individuals what effect would you expect this to have on the genotype and allele frequencies over time? Indicate possible percentages.
A wild-type fruit fly (heterozygous for gray body color andnormal wings) is mated with a black fly with vestigial wings.The offspring have the following phenotypic distribution: wildtype, 778; black vestigial, 785; black normal, 158; gray vestigial,162. What is the recombination frequency between these genesfor body color and wing size? Is this consistent with the resultsof the experiment in Figure 15.9?
The narrow-sense heritability of the number of peas perpod in a population of sugar snap peas is 0.5. The meanof the population is 6.2 peas per pod. A plant breederselects one plant with 6.8 peas per pod and crosses witha second plant that has 8.0 peas per pod. What is the expected numbers of peas per pod among the offspring ofthis cross?
Figure 19-11 shows the expected distributions for thethree genotypic classes if the B locus is a QTL affectingthe trait value.a. As drawn, what is the dominance/additive (D/A)ratio?b. How would you redraw this figure if the B locus hadno effect on the trait value?c. How would the positions along the x-axis of thecurves for the different genotypic classes of the B locuschange if D/A = 1.0?
Consider the following three point trihybrid testcross ibvolving traits in dragons. The genotypes determining the 8 progeny types from this testxross are shown below out of a sample of 1572 flies. What number of progeny for each genotype would you predict in the case of independent assortment. gametes number K L M 621 klm 608 k L M 103 K lm 109 K lm 64 k L m 57 K L m 3 k l M 7
Morgan obtained a white-eyed male fly in a population containing many red-eyed flies that he thought were truebreeding. As mentioned in the experiment, he crossed this fly withseveral red-eyed females, and all the offspring had red eyes. Butactually this is not quite true. Morgan observed 1237 red-eyed fliesand 3 white-eyed males. Provide two or more explanations why heobtained 3 white-eyed males in the F1 generation.
Some people can taste the bitter compound phenylthiocarbamide while others cannot. This trait isgoverned by a single autosomal gene; the allele fortasting is completely dominant with respect to the allele for nontasting. Among 1707 Hawaiians tested forthe ability to taste, 1326 tasters were found. Assumingthat the population is at Hardy-Weinberg equilibriumfor this gene and that mating is purely random:a. What are the allele frequencies for the tasting alleleT [= (p)] and for the nontasting allele t [= (q)]?b. What are the genotype frequencies in the population?c. Of all the matings in the population, what proportion will be between two nontasters?d. Of all the matings in the population, what proportion will be between a taster and a nontaster?e. Of all the matings in the population, what proportion will be between a taster male and a nontasterfemale?f. What proportion of all of the progeny produced byall matings between a taster male and a nontasterfemale will be nontasters?g. Of all…
Seed weight in a particular plant species is determined by pairs of alleles attwo loci (a+ a− and b+ b−) that are additive and equal in their effects. Plantswith genotype a− a− b− b− have seeds that average 1 g in weight, whereasplants with genotype a+ a+ b+ b+ have seeds that average 3.4 g in weight. Aplant with genotype a− a− b− b− is crossed with a plant of genotype a+ a+ b+b+.a. What is the predicted weight of seeds from the F1 progeny of this cross?b. If the F1 plants are intercrossed, what are the expected seed weights andproportions of the F2 plants?
In the experiment described in Figure 4.9, Morgan obtained awhite-eyed male fly in a population containing many red-eyedflies that he thought were true-breeding. The figure says that hecrossed this fly with a red-eyed female, and all the offspring hadred eyes. But actually this is not quite true. Morgan observed 1237red-eyed flies and 3 white-eyed males. Provide two or more explanationswhy he obtained 3 white-eyed males in the F1 generation.
In a randomly mating laboratory population of Drosophila, 4 percent of the flies have black bodies (encodedby the autosomal recessive b), and 96 percent havebrown bodies (the wild type, encoded by B). If this population is assumed to be in Hardy–Weinberg equilibrium, what are the allele frequencies of B and b and thegenotypic frequencies of B/B and B/b?