Which of the following statements about Mendelian or complex disease is TRUE?   Question options:   Genetic methods for studying Mendelian phenotypes, such as crossing, is not useful for mapping quantitative trait loci.   Mapping of quantitative trait loci does relies on genetic variations that directly contribute to the trait of interest.   Both Mendelian and complex traits are associated with single gene locus.   Genetic factors determine Mendelian traits, while environmental factors determine complex traits.   Genome-wide association studies rely on polymorphic markers that are in linkage disequilibrium with alleles that contribute to the trait of interest.

See photo attached.

Edio | Calendar X Edio | Student Da x days/1089977/lessons/1533969/variants/2439102/take/10/ A Q TEXT ANSWER The inheritance patterns for some traits in guinea pigs are listed in the table below. 1. Identify the phenotype of a guinea pig with the genotype HhBBrr. 2. Using the allele symbols in the table, identify the genotype of a guinea pig that is recessive for hair length, heterozygous for hair color, and homozygous dominant for hair texture. Trait Dominant Allele Recessive Allele hair short (H) long (h) length hair color black (B) white (b) rough (R) smooth (r) hair texture BIUG X₁ X¹ EEAA H Normal : √x Enter your answer here ŏooooo Questions Answered 中山川 Ω Ο Τ Edio | Calendar X RepostExchange X Practice All Changes Saved Continue

Please help with the following: How does penetrance differ from expressivity in genetics? A. Penetrance is the percentage of individuals with a specific genotype that exhibit the expected phenotype while expressivity is the degree to which a phenotypic character is expressed. B. Penetrance is the degree of lethality of a specific genotype while expressivity is how frequently that genotype is seen in the population. C. Penetrance is the presence of more than two alleles at a locus within a group of individuals while expressivity is the influence of sex on which alleles express themselves. D. None of the above. E. Penetrance refers to the paternal effects of a gene while expressivity refers to the maternal effects of a gene.

Does that mean if someone is a carrier the genotype will be Fh/fh? Because Fh is the diseased allele and fh is the wildtype or how will is it going to be. I am not sure how to answer it.

Phenotypes associated with polygenic traits:   Question 24 options:   Result from contributions of multiple genes.   are usually dominant and recessive.   always result in threshold traits.   Can always be easily categorized.   Can be studied in individual patients.