Explain where, in the world, the Hbs allele is mostly likely to be prevalent and why the allele persists in spite of the danger associated with having two Hbs alleles.

How many different genotypes results from the following AABb x AABB crossing. Assume genes A and B show complete dominance. a) 8 b)1 C)2 d)4

heritability was published in 2009 in the International Journal of Obesity. This study uses data from the "FinnTwin16" study in which nearly all twins born in Finland from 1975-79 are being tracked for many phenotypes. The table below reports correlation coefficients (rmz and dmz) separately for male and female twin pairs at about 30 years of age for 3 traits: BMI, waist circumference, and level of physical activity (the study investigated the relationships between these traits). Calculate H² for each trait and sex using the strategy discussed in Video 4.4. Match the your values with the appropriate trait and sex. Number of pairs BMI Waist circumference Physical activity Female BMI 0.77 0.71 0.55 Female physical activity Male BMI Female waist circumference Male physical activity Male waist circumference Female MZ 414 0.79 0.54 0.55 [[|]] Male MZ 282 0.36 0.35 0.24 Female DZ 353 0.31 0.26 0.30 Male DZ 309

Entomologists at the New York State Department of Agriculture are interested in determiningthe connection between pest insects infesting crop plants with populations of the same insect-infesting native plants in natural habitats. Long-term trapping and monitoring studies have estimated that on average 3% of the populations move between habitats (farm to natural and vis versa) each generation. A new insecticide resistance allele (∆K) has begun to increase in frequency in agricultural populations. A genotyping survey at this locus of 50 individuals in each population has revealed the following genotype counts:4a. Based on the effects of migration alone, what will the frequency of ∆K be in the forestpopulation in the next generation?   4b. If migration was acting in here without selection, what would the frequency of ΔK be in the agricultural population in the next generation?   4c. If the natural forest population was substantially larger than the agricultural population, how might…

Select the three hypotheses that explain why being born in the United States leads to a higher chance of developing allergies.

In humans, the Rh factor genetic information is inherited from our parents, but it is inherited independently of the ABO blood type alleles. In humans, Rh+ individuals have the Rh antigen on their red blood cells, while Rh- individuals do not. There are two different alleles for the Rh factor known as Rh+ and rh. Assume that a dominant gene Rh produces the Rh+ phenotype, and that the recessive rh allele produces the Rh- phenotype. In a population that is in Hardy-Weinberg equilibrium, if 160 out of 200 individuals are Rh+, calculate the frequencies of both alleles.

Sickle cell anemia is a disease that is caused by a mutation in the gene that produces hemoglobin.  Hemoglobin carries oxygen in red blood cells.  The HbA allele produces normal hemoglobin and the HbS allele produces hemoglobin that sticks together and causes red blood cells to sickle.  Heterozygous individuals (HbAHbS) produce both normal and "sickle" hemoglobin so the HbA and HbS alleles are codominant.  Heterozygotes do not develop sickle cell anemia and are described as having the sickle cell trait.  Individuals that are homozygous for the sickle allele (HbSHbS) only produce "sickle" hemoglobin and develop sickle cell disease. A man with the sickle cell trait married a woman with the sickle cell trait. Determine the probability that they will have children with the sickle cell trait or sickle cell disease.Record your answer as a value between 0 and 1 rounded to two decimal places.  Answer

An F2 ratio of 12:3:1 is most characteristic of a genetic interaction involving? 1) two gene loci with two alleles per locus 2) three gene loci with two alleles per each gene 3) two alleles of the same gene 4) multiple alleles of one gene

. Fig 4.1 shows the number of deaths from TB and the number of new cases of TB from 1925 to2010 in Canada.  The vaccine for TB was introduced in Canada for widespread use from 1948.Antibiotics, such as streptomycin, were introduced in Canada from 1940.Use the information in Fig. 4.1 to comment on the effect of the introduction of the vaccine andantibiotics on the number of new cases and deaths from TB. ……………………………………………………………………………   please solve max 15-20 minutes and no reject thank u

Please explain why Huntington’s Disease is a dominant allele, but its occurrence is very low in the population.