Earwax type is a Mendelian human trait. Specifically, wet earwax (W) is a dominant allele, and dry earwax (w) is a recessive allele. Given parents with WW and ww genotypes, what is the probability that their child will have a dry earwax phenotype? Enter your answer as a percentage. W W probability: % Ww Ww Ww Ww
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- Albinism is a recessive disorder where there is a lack of melanin. Andrea and her husband Claude both have normal skin pigmentation. Andrea’s mother has the albino phenotype, but her father and her brother do not (normal pigmentation). Claude’s parents are both normal, but he has a sister who has the condition (is albino). Answer the following questions If Andrea and Claude are carriers for the albino allele, what is the probability that they have an albino child? If Andrea and Claude have a second child, what is the probability this child be normal (non-albino)? NOTE: Draw a punnet square or show your work.Two healthy parents have a child who is later diagnosed with cystic fibrosis. What is the genetic term for this kind of disease? Using Mendel’s pattern, pick a letter for this gene and give the genotypes of the parents and the child. What are the odds that their next child will also have cystic fibrosis?Marfan’s syndrome is an example of pleiotrophy where individuals with a copy of the dominant allele have skeletal disorders, mitral valve prolapse and characteristic slender, loose joints. If Abraham Lincoln had a marfanoid disorder which he inherited from his mother, what are the chances he passed this trait on to his offspring? Consider that Mary Todd Lincoln, his wife, was 5’2”. please include a punnett square
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- Which of the following rows correctly identifies the relationship between the blood type alleles IA, IB, and i? Select one: a. Relationship between IA and IB Relationship between IB and i Incomplete dominance Codominance b. Relationship between IA and IB Relationship between IB and i Multiple alleles Incomplete dominance c. Relationship between IA and IB Relationship between IB and i Dominant and recessive Multiple alleles d. Relationship between IA and IB Relationship between IB and i Codominance Dominant and recessiveA man and woman are both heterozygous for an autosomal recessive disease allele. They would like to have four children. What is the probability that the youngest and oldest children will be affected while the middle two children are not affected? Use two decimal places for your answer.If one parent is heterozygous for an autosomal allele (Aa), and the other is homozygous for the recessive allele (aa), what is the probability that their child will inherit the dominant allele and have the associated trait? 50 percent 75 percent 0 percent 100 percent
- Based on the genes of a mom and dad, there is a 1/2 chance they will have a child with brown hair and a 1/4 chance they will have a child with blue eyes. What is the probability they will have a child with brown hair AND blue eyes?Suppose two parents, a father with the genotype AaBbccDd and a mother with the genotype aaBbCcDd, want to have children. Assume the loci are inherited independently of each other. Enter your answers as the most simplified fractions (e.g. 1/8 instead of 2/16). What proportion of the offspring are expected to have: The same genotype as the father? The same phenotype as the father? All dominant phenotypes? All recessive phenotypes?Duchenne's muscular dystrophy is sex-linked and usually affects only males. Victims of the disease become progressively weaker, starting early in life. If your mother's brother (your uncle) had Duchenne's disease, what is the probability that you have received the allele? Show the solution through pedigree analysis.