Ans. Such genotype would be termed as a heterozygous genotype. As the dominant gene can cover the recessive one this is a case of complete dominance.
if a person has one dominant allele and recessive allele with Hunington's disease, how would you...
Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive allele h. Consider a couple where the man has the genotype Hh, and the woman has the genotype hh. What is the chance that their first child will develop Huntington's disease? A. 0% B. 25% C. 75% D. 50%
Albinism is a genetic disorder caused by an autosomal recessive allele. The dominant allele results in the wildtype pigmentation. a) If an albino marries a homozygous person for the wildtype pigmentation allele, what would be the expected phenotype and genotype of their children? b) If an albino marries a person with wildtype pigmentation but that carries the albino allele, what would be the expected phenotypes and genotypes of their children? c) Two parents of wildtype pigmentation had an albino child....
A certain disease is caused by a recessive mutant allele. (The wild-type allele is dominant.) However, the penetrance of the disease is 75%. Two individuals known to be heterozygotes have a child. What is the probability that the child exhibits the disease?
Given an individual who is heterozygous for a recessive disease (i.e., the wildtype allele is dominant), explain how a deletion could result in the expression of the recessive phenotype. Be sure to use the formal vocabulary for full points.
QUESTION 3 If "R" represents the dominant allele for right-handedness, and "r" represents the recessive allele for left- andedness, how would you depict a person who is Heterozygous for the gene? RL o rr
10. Red green colorblindness is an X-linked recessive disease. That means that it is carried on the X chromosome, so men have just one copy of the gene while women have two. In women, both copies must be the recessive disease allele in order to show the disease phenotype, but because men only have one allele, just one recessive allele causes the disease phenotype. Matt and Kate both have normal vision, but Kate's father is colorblind. Use X for the...
The pedigree below shows the inheritance pattern of a sex-linked allele for one family. What is true about the genotype of individuall-2? 1-1 1-2 II-1 II-2 II-3 II-4 III-1 III-2 The disease is caused by a dominant allele (D) and his genotype is dd He must have the genotype X'Y The disease is caused by having two recessive alleles (dd) and his genotype is He has the recessive disease allele on his X chromosome XY He has the dominant disease...
In a cross involving one gene where one allele is dominant and one is recessive, when two heterozygotes are crossed, the offspring should contain_____________. -Two different phenotypes and two different genotypes. -Two different phenotypes and three different genotypes. -Three different phenotypes and two different genotypes. -Three different phenotypes and three different genotypes.\ -Two different phenotypes and one genotype.
1) What is the molecular basis of dominant and recessive alleles (for complete dominance; ignore incomplete dominance, epistasis, etc.)? To answer this question, consider the following: a) If alleles are copies of the same gene, why are two types of alleles? What differentiates a dominant allele from a recessive allele (at the molecular level)? Be specific (base pairs, transcription/translation method, protein produced, etc.) b) Why is the phenotype determined by the dominant allele in heterozygous genotype? Be specific. c) What...
Sickle cell disease is an autosomal recessive disease. Homozygous dominant (SS) and heterozygous (Ss) individuals will be non-diseased, but homozygous recessive (ss) individuals will have the disease. A study of sickle cell disease in New York found that in a one year period: 1/1146 of all infants in the state were born with sickle cell disease 1/230 non-hispanic black infants were born with sickle cell disease 1/41,647 non-hispanic white infants were born with sickle cell disease 1/2,320 hispanic infants were...