Bob and Mary both suffer from Sickle Cell Disease, an autosomalrecessive condition (they have the condition - they are not justcarriers). They met in a support group and against their doctor'sadvice, decide to have a child. What is the probability that theirchild will NOT have Sickle Cell Disease?
The _____ checkpoint can only be passed if the rightgrowth factors have been received from other cells
The protein hemoglobin, which carries oxygen in red blood cells,is a protein complex that consists of 4 separate subunits encodedby 2 genes: One gene encodes the two alpha-globin subunits whilethe other encodes the two beta-globin subunits. Four functionalsubunits (2 of each kind) are needed for a functional complex.
If a person carries just one mutant allele for alpha-globin, anycomplexes containing a copy of the mutant protein arenonfunctional, even if the other alpha-globin subunit is normal. Asa result, almost all the hemoglobin produced is nonfunctional.
This is an example of a     mutation.
| | leaky / hypomorphic |
| | gain of function / neomorphic |
| | gain of function / hypermorphic |
| | dominant negative / antimorphic |
What gametes are possible from the parental genotype XXYyZz?
SELECT ALL THAT APPLY, but be aware that incorrect choices countagainst you.
| | XYZ |
| | XYz |
| | XyZ |
| | xYZ |
| | xxyyzz |
| | xYz |
| | Xyz |
| | xyz |
