How is incomplete dominance differentiated fromco-dominance?In incomplete dominance, both alleles arefully expressed while in co-dominance neitherof the two alleles can completely cancel thepresence of the other.In incomplete dominance, neither of the twoalleles can completely conceal the presence ofthe other while in co-dominance both thealleles are fully expressed.In incomplete dominance, two alleles arepresent, while in co-dominance, more thantwo alleles are present.In incomplete dominance, more than twoalleles are present, while in co-dominance,two alleles are present.

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Description: How is incomplete dominance differentiated fromco-dominance?In incomplete dominance, both alleles arefully expressed while in co-dominance neitherof the two alleles can completely cancel thepresence of the other.In incomplete dominance, neither of t

Any gene has two alleles pairs viz. Dominant or Recessive. The allele which gets expressed in the…

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How is incomplete dominance differentiated from co-dominance? In incomplete dominance, both alleles are fully expressed while in co-dominance neither of the two alleles can completely cancel the presence of the other.

How is incomplete dominance differentiated from co-dominance? In incomplete dominance, both alleles are fully expressed while in co-dominance neither of the two alleles can completely cancel the presence of the other.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter5: The Inheritance Of Complex Traits

Section: Chapter Questions

Problem 22QP: Height in humans is controlled by the additive action of genes and the action of environmental...

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In cats, the allele (B) produces black color but (b) producesyellow color. These alleles are co‐dominant to each other. Aheterozygote produces a tortoise‐shell color. The alleles (B)and (b) are sex‐linked as well. Cross a tortoise‐shell femalewith a yellow male. What percent of their offspring will be yellow? What percent of their offspring will be black? What percent of their offspring will be tortoise shell?
Let’s suppose a gene exists as a functional wild-type allele and anonfunctional mutant allele. At the organism level (i.e., at the levelof visible traits), the wild-type allele is dominant. In a heterozygote,discuss whether dominance occurs at the cellular or molecularlevel. Discuss examples in which the issue of dominance dependson the level of examination.
For an individual having agenotype formed of twodifferent alleles that conditiondifferent varieties of the samephenotypical trait, upon whatwill the phenotypical featureactually manifested depend?
Height in humans is controlled by the additive action of genes and the action of environmental factors. For the purposes of this problem, assume that height is controlled by four genesA, B, C, and Dand that there are no environmental effects. Assume further that additive alleles contribute two units of height and partially additive alleles contribute one unit of height. a. Given these assumptions, can two individuals of moderate height produce offspring that are much taller and shorter than either parent? If so, how can this happen? b. Can someone of minimum height and someone of intermediate height have children taller than the parent of intermediate height? Why or why not?
In rabbits, black color (B) is dominant to brown (b), while fullcolor (C) is dominant to chinchilla (c ch). The genes controllingthese traits are linked. Rabbits that are heterozygous for bothtraits and express black, full color are crossed to rabbits thatexpress brown, chinchilla with the following results:31 brown, chinchilla 34 black, full16 brown, full 19 black, chinchillaDetermine the arrangement of alleles in the heterozygousparents and the map distance between the two genes.
Why can it be said that arecessive allele can remainhidden in the phenotype of anindividual and revealed onlywhen manifested inhomozygosity in theoffspring?
In rabbits, fur colour can be either grey, black or blotchy. Blotchy is present as grey and black spotspresent in no specific pattern. Males are almost always either grey or black, while females can begrey, black or blotchy. However, a male individual is found that shows the blotchy pattern, and youexpect a non-disjunction event might be to blame. Explain the inheritance of coat colour in rabbits,and also provide an explanation for the blotchy male.
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?
With regard to heterosis, is each of the following statements consistent with the dominance hypothesis, the overdominance hypothesis, or both? A. Strains that have been highly inbred have become monomorphicfor one or more recessive alleles that are somewhat detrimentalto the organism. B. Hybrid vigor occurs because highly inbred strains are monomorphicfor many genes, whereas hybrids are more likely to beheterozygous for those same genes.C. If a gene exists in two alleles, hybrids are more vigorousbecause heterozygosity for the gene is more beneficial thanhomozygosity of either allele.
The dominant allele H reduces the number of bodybristles in fruit flies, giving rise to a hairless phenotype. In the homozygous condition, H is lethal. Thedominant allele S has no effect on bristle number except in the presence of H, in which case a single S allele suppresses the hairless phenotype, thus restoringthe bristles. However, S is also lethal in homozygotes.a. What ratio of flies with normal bristles to hairlessindividuals would we find in the live progeny of across between two normal flies both carrying theH allele in the suppressed condition?b. When the hairless progeny of the previous cross arecrossed with one of the parental normal flies frompart (a) (meaning a fly that carries H in the suppressed condition), what phenotypic ratio wouldyou expect to find among their live progeny?
For Mendelian inheritance, the nuclear genotype (i.e., the allelesfound on chromosomes in the cell nucleus) directly influences anoffspring’s traits. In contrast, for non-Mendelian inheritance patterns, the offspring’s phenotype cannot be reliably predicted solelyfrom its genotype. For the following traits, what do you need toknow to predict the phenotypic outcome?A. Dwarfism due to a mutant Igf2 alleleB. Snail coiling directionC. Leber hereditary optic neuropathy
What is the differencebetween dominant allele andrecessive allele?