All the offspring of a cross between a two-toed monster and a four-toed monster have three toes. This means that the allele for two toes is to the allele for four toes. dominant codominant incompletely dominant recessive
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A: Autosomal recessive trait Autosomal traits are those that are controlled by somatic cells (not the…
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A: Answer:
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A: Alleles: Genes that occupy corresponding positions on homologous chromosomes and controls the same…
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A: Incomplete dominance is the state in which neither of the two alleles either dominant or recessive…
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A: To determine: To determine the genotype of mother cat when one is dominant
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A: The biochemical substance that is carried from the preceding generation to the succeeding generation…
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A: An allele is a variant form of a given gene. It means that it is one or more versions of a gene at…
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A: The alleles are generally of dominant and recessive type and some other forms like codominant are…
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A: Homozygous and heterozygous are used to describe allele pairs. Homozygous means that the parent…
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A: Dihybrid cross takes into account two genes.
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A: A true-breeding is a cross where the parents produce offspring that carry the same phenotype. It…
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A: Punnatte squares are tabular representation which helps in finding the offspring of a cross .
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A: Introduction: The most fundamental physical and physiological component of genetic inheritance is…
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A: The different variations of genes are called alleles. In a diploid organism, there are two alleles…
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- A sex-influenced trait is dominant in males of a certain speciesof animal and causes bushy tails. The same trait is recessive infemales. Fur color is not sex-influenced.Yellow fur is dominantto white fur. A true-breeding female with a bushy tail and yellowfur was crossed to a white male without a bushy tail (i.e., a normaltail). The F1 females were then crossed to white males withoutbushy tails. The following results were obtained: A. Conduct a chi square test to determine if these two genes arelinked.B. If the genes are linked, calculate the map distance betweenthem. Explain which data you used in your calculation.Albino rabbits (lacking pigment) are homozygous forthe recessive c allele (C allows pigment formation).Rabbits homozygous for the recessive b allele makebrown pigment, while those with at least one copy ofB make black pigment. True-breeding brown rabbitswere crossed to albinos, which were also BB. F1 rabbits, which were all black, were crossed to the doublerecessive (bb cc). The progeny obtained were 34black, 66 brown, and 100 albino.a. What phenotypic proportions would have beenexpected if the b and c loci were unlinked?b. How far apart are the two loci?Manx cats have no tail. This is caused by a dominantmutation M, which is embryo lethal when homozygous. An unlinked gene B controls the color of the fur onthe cat's tail. The dominant B allele produces black fur on tails, while the recessive allele b produceswhite fur on tails. A Manx cat that is B/B is crossed to a white-tailed cat. Half of the F1 progeny hadthe Manx phenotype and the other half had normal, black tails.The F1 cats with the Manx phenotype were crossed to each other, producing F2 cats. What is the ratioof the following phenotypes in the F2
- In sheep, the formation of horns is a sex-influenced trait; the allelethat results in horns is dominant in males and recessive in females.Females must be homozygous for the horned allele to have horns.A horned ram was crossed to a polled (unhorned) ewe, and the firstoffspring they produced was a horned ewe. What are the genotypesof the parents?Having a widows peak is dominant W to not having one (ww)Having attached earlobes is a recessive trait (ee)- Jack and Jill are heterozygous for both traits.What's the probability of them having a child with a widow's peak and attachedearlobes?Attached are three pedigrees. For each trait, considerwhether it is or is not consistent with X-linked recessiveinheritance. In a sentence or two, indicate why or why not.
- Scurs is an example of a sex-influenced traitin cattle that is dominant in males and recessive in females.A male and a female, neither of which has scurs, producea male offspring with scurs. What are the genotypes of theparents?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?What mode of inheritance does dark blue skin color in Gunguns show? The Ankura race of Gunguns on the planet Naboo have a an inherited genetic disorder which results in afiete ididuas haveing dark blue skin color.The pedigree belowis from anafected faniy Gunguns are dpid wih females being homoazygous and males being hemizygous. Answer questions 3-6 based on the pedigre below: 2 3 9 10 00 5 6 89 1 12 13 14
- In individuals affected by cystic fibrosis, salt crystals may appear afterperspiration dries up. In addition, the disease causes respiratory disorderswhich can be both debilitating and lethal. It occurs in individuals homozygousfor recessive gene. If 2 normal parents had a daughter with the symptoms ofthis disease, and a normal son, what is the probability that he might be acarrier of the recessive gene?Express answer in fraction form.As a Drosophila research geneticist, you keep stocksof flies of specific genotypes. You have a fly that hasnormal wings (dominant phenotype). Flies with shortwings are homozygous for a recessive allele of thewing-length gene. You need to know if this fly withnormal wings is pure-breeding or heterozygous forthe wing-length trait. What cross would you do todetermine the genotype, and what results would youexpect for each possible genotype?A woman who is heterozygous, Bb, has brown eyes; B (brown) isthe dominant allele, and b (blue) is recessive. One of her eyes,however, has a patch of blue color. Give three different explanationsfor how this might have occurred?