Pedigree 1 Pedigree 1 shows the occurance of blue feathers in a family of parrots. Do you think blue feathers is dominant or recessive? How did you know? Support your answer.

if you cross a bluefish (BB) with a yellow fish (YY). Color code the Punnett square based on the resulting phenotypes if these fish follow the codominance inheritance pattern.

You have been hired to produce a family tree for three generations of a family where a disorder called “blinky” syndrome is observed. People who suffer from blinky syndrome blink their eyes rapidly when they look at bright lights. In order to draw a pedigree chart for this family, you interview Mike and Annie. Neither suffer from this syndrome.  Annie’s mother is normal, while Annie’s father blinked like crazy at bright lights. Annie has one sister and one brother and both of them are unaffected. While Annie’s sister has yet to have kids, her brother married a blinky sufferer. Mike’s mother is a blinker while his father is normal. Mike’s brother is just like their mother. In addition, this brother married a blinker. Mike’s sister is normal - as is her husband and their one boy.  Draw a pedigree chart below in order to answer the following on the next page. Use the letters A and a for the genotypes. If more than one genotype is possible for an individual - you may write it as A with a…

You know that cystic fibrosis runs in your mothers family. Your fathers family is not known to have it. Is it worse to have a parent with Costco fibrosis or a sibling with cystic fibrosis? Draw a small pedigree for both options make the appropriate assumptions and calculate the chances for each, then state your conclusion.

In humans, the ability to roll the tongue is a dominant trait (R), while the inability to roll the tongue is recessive (r). Imagine two parents, both of which are heterozygous, decide to have a child. Create a Punnett square to determine what percentage of their children would be able to roll their tongues.

In this pedigree, which parents-child pair allows you to reject the hypothesis of X- linked dominant as an inheritance pattern? If there are more than one pair, just pick one possibility. Be careful that the person is really a child. Specify generation and number. Use the notation format "I1-|11" II 12 3 III 1 3. 6. 7 8 9.

For the pedigree shown here, give the most likely mode of inheritance.