In an experiment focusing on weight gain between ages 3 and 6 weeks in mice, the difference in mean phenotype between two strains was 17.6 grams and the genotypic variance was estimated as 0.88. Estimate the minimum number of genes affecting this trait.

In an experiment focusing on weight gain between ages 3 and 6 weeks in mice, the difference in mean phenotype between two strains was 17.6 grams and the genotypic variance was estimated as 0.88. Estimate the minimum number of genes affecting this trait.

Name: In an experiment focusing on weight gain between ages 3 and 6 weeks in
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: In an experiment focusing on weight gain between ages 3 and 6 weeks in mice, the difference in mean phenotype between two strains was 17.6 grams and the genotypic variance was estimated as 0.88. Estimate the minimum number of genes affecting this tra

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter18: Genetics Of Behavior

Section: Chapter Questions

Problem 14QP: A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known...

See similar textbooks

Similar questions

Using the example of pea color in Mendel’s pea plants, can you devise equations to determine the allele frequencies of A and a from the genotype frequencies of aa, Aa, and AA?
The following table shows the number of dogs for certain tail lengths in a population of dogs. Tail Length Number of Dogs very short (less than 1 inch) 2 short (1–5 inches) 5 medium (5–10 inches) 15 long (10–15 inches) 5 very long (15–25 inches) 2 Based on this data, what type of trait is tail length in dogs? (a) Mendelian (b) codominant (c) (d) polygenic
Draw the expected phenotypic variance of a trait encoded by 5 genes with 25% environmental variance vs. a trait encoded by 5 genes with 2% environmental variance.
The following table shows the number of dogs for certain tail lengths in a population of dogs. Based on this data, what type of trait is tail length in dogs? polygenic Mendelian pleiotropic codominant
Suppose you grew genetically identical dandelion seeds in an environmentally controlled environment like a greenhouse.Why would you expect to see a phenotypic variance greater than zero for these genetically identical dandelions grown in a constant environment?
Why is the variance larger for a BC1 population compared to an F1 population?
Using the observed counts for each genotype, how do you find the expected values with those numbers and the frequencies?
In 1-3 sentences each define the follwing terms: complex trait, concordance, environmental variance.
You are selecting for mice with high blood glucose levels. The population has a mean level of 50mg/100mL and you select parents that have mean level of 55mg/100mL. The offspring have a mean level of 53mg/100mL. Estimate the narrow-sense heritability of this trait from these data.
Two inbred lines of beans are crossed with one another. In the F1 generation, the variance in bean weight is 15. When the F2 generation is self-crossed, the F2 generation has the same mean, with a variance of 60. What is the genetic variance of bean weight in this population?
An investigation of shrew tail length showed that the length of tails varied from 24mm to 66mm. In one generation recorded out of a population of 2,360 shrews only 2 were as long as 66mm. In another cross a new true-breeding shrew variety was used which gave a range of F1 tail lengths with a variance of 0.316. In the crosses using the original variety there was an even greater range of tail lengths and a variance of 0.725. What can you conclude about the heritability (H2) of tail length in the original shrews?
In a herd of dairy cattle, milk yield and the percentage of butterfat exhibit a geneticcorrelation of −0.38. If greater milk yield is selected in this herd, what will be the effecton the percentage of butterfat?