You cross an individual that is homozygous dominant for brown hair (DD) with a heterozygous individual (Dd)? What is the probability of a blonde child? Draw or take stern shot of a punnet square.

For the polydactyly trait, P = polydactylous (having 6 fingers), p= normal (having 5 fingers). What is the probability (at each ,ating) that two parents who are both homozygous dominant for the trait will produce a 6 fingered offspring? 0% 25% 50% 75% 100%

"A couple wants to have 6 children. The mother is heterozygous for the sex-linked recessive trait for colorblindness, and the father is colorblind. What is the probability that AT LEAST three of the six children will be colorblind?"

Explain the types of genetic dominance (Incomplete dominance vs complete dominance) include examples.

A. In summer squash, white fruit color (W) is dominant over yellow fruit color (w) and diskshaped fruit (D) is dominant over sphere-shaped fruit (d). If a squash plant true-breeding  for white, disk-shaped fruit is crossed with a plant heterozygous fruit, what will the phenotypic and genotypic ratios be?

Use the Punnett square to find the genotype of the missing parent. Having freckles is dominant (F) and having no freckles is recessive (). Curly hair is recessive (c) and straight hair is dominant (C). A man with curly hair marries a woman who is homozygous dominant for straight hair. Complete the Punnett square. What is the probability they will have a child with curly hair? Straight hair? FF Ff f Ff ff % curly % straight

Answer is: incomplete dominance, variable expressivity because in incomplete dominance, heterozygotes have a phenotype in between the homozygous dominant and recessive (described here as "less hair"). In variable expressivity, individuals with the same genotype have variations in severity of the same phenotype. Both of these characteristics are displayed in this example.

In humans, the gene for right-handedness is dominant to the gene for left-handedness. A man and a woman both heterozygous for this trait marry. What percent of their children can they expect to be right-handed? What percent left-handed? What are the genotypic and phenotypic ratios?

Demonstrate how males are at an increased risk of sex-linked recessive traits by crossing a female who is a carrier for Hunter syndrome with a normal male. The genotypes involved are XH, Xh, and Y. State the genotypes and phenotypes of the offspring.

in earlobes, attached (A) earlobe is dominant while free (f) earlobe is recessive.  - free earlobes with heterozygous dominant for attached earlobes? (percent) - heterozygous for attached earlobes with heterozygous for attached earlobes. (percentage) - Homozygous dominant for attached earlobes with free earlobes. (Answer in percent)