Noncarrior mother Affected fathor aa Aa Gamete production Affected child Sperm Noncarrier child Aa aa Eggs Noncarrier child Aa aa Affected child

Determine the probability of the following outcome if two individuals heterozygous for the a specific disease were to produce offspring with the assigned phenotype.  (6 offspring, 5 normal and 1 with disease.) Father and Mother are both heterozygous for the disease

The father of three sons and two daughters begins to show symptoms of Huntington disease. What is the probability that Sam, the man’s second oldest son (II-2), will suffer from the disease if he lives a normal life span? Sam’s mother and her ancestors do not have the disease. Sam's father was adopted, so we do not know his biological family history for Huntington disease. Explore all possible outcomes for Sam and explain your reasoning. What about the risk to Sam's sisters? Would that be the same or not?

Thick mucous gland secretions, elevated sweat electrolytes, meconium ileus, and difficulty maintaining and gaining weight are associated with which autosomal recessive disorder? Cerebral palsy. Cystic fibrosis Muscular dystrophy. Multiple sclerosis

Are all forms of Down syndrome due to non-disjunction?​YES​​​ or NO​?

Name: Human Phenotypes Simple dominance inheritance pattern: Q: How many phenotypes are evident in patterns of simple dominance? What are they? If a phenotype results from simple dominance, which two genotypes cannot be distinguished? Which phenotype is always representative of the genotype? Now determine your personal inheritance of the following traits. As you read through the following descriptions, you'll identify your trait, and determine your phenotype. Your trait will be one of the two Shape of the face. Most facial characteristics are affected by many different genes acting together (multiple factors or polygenic inheritance). For this trait we have simplified the nature of this trait by assuming it is the result of a single gene. Oval shape is dominant (needs only homozygous (both alleles are the same, either dominant or recessive) or heterozygous (one dominant allele and one recessive allele). Square shape is recessive (requires that both alleles are the recessive allele in…

Is it possible to determine the genotype of an individual who has a dominant phenotype? Why or Why not?

Describe two mechanisms for causing uniparental disomy.

A male with autosomal dominant brown hair and a female with unknown hair color have 3 sons with recessive blonde hair. What is the male’s genotype?  What are the possible genotype(s) and phenotype(s) [hair color] of the female?