Height in humans depends on the additive action of genes. Assume that this trait is controlled by the four loci R, S, T, and U and that environmental effects are negligible. Instead of additive versus nonadditive alleles, assume that additive and partially additive alleles exist. Additive alleles contribute two units, and partially additive alleles contribute one unit to height. (a) Can two individuals of moderate height produce offspring that are much taller or shorter than either parent? If so, how? (b) If an individual with the minimum height specified by these genes marries an individual of intermediate or moderate height, will any of their children be taller than the tall parent? Why or why not?

Q: Height in humans depends on the additive action of genes. Assume that this trait is controlled by…

A: The question is about whether two individuals of moderate height can produce offspring that are much…

Q: In fruit flies, the dominant H allele gives rise to a hairless phenotype, hh gives rise to normal…

A: The alleles are the alternative forms of a gene that are located on the same locus of homologous…

Q: In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is…

A: Zygosity can be either heterozygous or homozygous. Heterozygous has one recessive allele and one…

Q: How many mice would you expect to be homozygous dominant and heterozygous for

A: Dominant and recessive alleles alleles that can be expressed only when present in homozygous…

Q: What are the possible phenotypes (and their probabilities)?

A: Dihybrid cross It is mating between two organisms that are identically hybrid for two traits. This…

Q: a gold re white o sets of the possible genotypes of the parental and the resulting F1 fish by…

A: In genetics, the cross which includes only one trait is called a monohybrid cross. The cross between…

Q: influenced trait that acts dominantly in females E compared to large body mass (+). Select all of…

A: Crossing over means of introducing a new combination of genes and hence traits.Crossing over…

Q: Identify each of the following as an example of allele, genotype,and/or phenotype frequency:A.…

A: Allele frequency ( gene frequency), is the relative frequency of an allele (variant of a gene) at a…

Q: In domestic chicken, feather colour and shape are two traits which are controlled by autosomal…

A: The gene is the primary unit of heredity for all life forms. The genotype of an organism stands for…

Q: In a species of beetles, individuals may be red, black, white or tan. Colour is controlled by a…

A: The parents are a white female × tan male. Both rw and Rw individuals are phenotypically white so…

Q: Fur color in rats is a trait affected by a single gene that displays incomplete dominance. Rats with…

A: From the question given, Rat with black fur: BB Rat with white fur: bb Rat with grey fur: Bb The…

Q: Trait X displays 98% concordance in both monozygotic and dizygotic twins. Do these concordances…

A: Ans: Concordance rates: This is the rate or percentage which indicates the specific diseases or…

Q: Identify each of the following as an example of allele, genotype, and/or phenotype frequency: A.…

A: Allele frequency is defined as the number of individual alleles of a certain type divided by the…

Q: n guinea pigs, an allele for rough fur (R) is dominant over an allele for smooth fur (r), and an…

A: Phenotype of RRBB/ RrBb will have Rough and black coat Whereas Phenotype of  rrbb will have smoth…

Q: In fruit flies, the allele for long wings (A) is dominant to the allele for short wings (a), and the…

A: Genes are the basic functional units of the heredity, that aids in transferring the genetic…

Q: Connection to Quantitative traits: SNPs are inherited in a Mendelian fashion and are often polygenic…

A: A quantitative trait is a phenotype that can be measured and is influenced by the interactions of…

Q: Two loci contribute to eyelash length in angora rabbits (locus A  and B).   Assuming additive…

A: Additive genetic variance means each allele that is inherited has a particular contribution to the…

Q: brown hair, a widow’s peak, and freckles

A: Answer:Assume that hair color, hair line, and skin tone in humans are different traits that are…

Q: In Blank 1, provide the three-factor phenotypic ratio for the following cross: TT H-H BWBWX Tt HSHS…

A: Blank1 -  Phenotypic ratio -  Based on the crosses between blank 1 genotypes, the Phenotypic ratios…

Q: Geneticists believe that compulsive selfie-taking (M) is an autosomal dominant trait over controlled…

A: The term penetrance refers to whether or not the genotype manifests clinically in the individual.…

Q: In plants, a trait has a narrow-sense heritability of 0.75.  This indicates  a) the trait is…

A: Heritability  Heritability means the phenotypic variance in a population due to genetic variance…

Q: The clamshell orchid can have a dorsal sepal that is either bright purple (P) or yellow (Y), and may…

A: This question involves the principles of Mendelian genetics, specifically the concepts of dominance,…

Q: Several loci affect hair development in dogs. The allele for wire hair (W) is dominant to its allele…

A: Wire hair is dominant. Wire hair-W Straight hair-W Hairlessness is dominant in mexican dogs.…

Q: Trait Allele Effect CH CW Feather colour Produces black feathers in homozygotes Produces white…

A: Test cross aids in determining the genotype of an individual if it is showing a dominant character.…

Q: What are the chances that teh child will not like the Cilantro?    a) 25% b) 50% c) 0% d)100%

A: Cilantro (aka the leaves of the coriander plant) is a tasty herb to most people. A pleasing…

Q: The complete absence of one or more teeth (tooth agenesis) is a common trait in humans-indeed, more…

A: The pedigree analysis helps us identifying the mode of inheritance of a particular disease by…

Q: , you have continued to study the genetics of Snorks. You witness a cross between a snork ygous for…

A: Genetics is the study of genes and their properties   Cross between species is the procedure of…

Q: On an island in the Pacific Ocean, there is a species of birds with different sized beaks, with one…

A: According to Mendelian inheritance, a single character is controlled by one or more genes and each…

Q: In humans, there is a gene that influences the ability to smell the thioesters present in urine…

A: In humans , the ability to smell thioesters is basically an autosomal dominant character. Where,  A…

Q: In poultry, two independently assorting genes together determine the structure of the comb. Thus,…

A: Given: In poultry, two independently assorting genes together determine the structure of the comb.…

Q: Given that there is a trait determined by the alleles A and a, where A is dominant, i.e., the…

A: Dominant allele is a allele which show its effect both in the heterozygous and homozygous condition…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.