06:29Dominant, Recessive, Incomplete Dominant, Codominant? What The Heterozygous Does This Mean?Clint Explains727views
03:28Co-dominance and Incomplete Dominance | Biomolecules | MCAT | Khan Academykhanacademymedicine722views
Multiple ChoiceIf you look at a blood sample from a person who is heterozygous at the sickle cell locus you will see both normal circular red blood cells and sickle-shaped red blood cells. This is an example of1305views10rank
Multiple ChoiceA gene for the MN blood group has codominant alleles M and N. If both children in a family are of blood type M, which of the following situations is possible?3548views8rank3comments
Multiple ChoiceThe number of different alleles for ABO blood types is _____ resulting in _____ different blood types.1342views6rank
Multiple ChoiceWhich of the following matings cannot produce a child with blood type O? The letters refer to blood types (phenotypes). 491views
Multiple ChoiceFlower color in snapdragons is an example of incomplete dominance. When a red-flowered plant is crossed with a white-flowered plant, the F1 generation has pink flowers. If a pink-flowered plant is crossed with another pink-flowered plant, the progeny plants will be __________. 1925views1rank
Multiple ChoiceA red bull is crossed with a white cow and all of the offspring are roan, an intermediate color that is caused by the presence of both red and white hairs. This is an example of genes that are __________. 1485views
Multiple ChoiceWhich choice below describes the expression of Tay-Sachs disease in humans at the biochemical level? 682views
Multiple ChoiceHuman blood groups are governed by three alleles: IA, IB, and i. IA and IB are codominant and i is recessive to both. A man who has type B blood and a woman who has type A blood could have children of which of the following phenotypes? 2347views1comments
Multiple ChoiceHow does codominance at the molecular level help to explain why evolutionary processes haven't resulted in the elimination of the sickle-cell allele among people of African descent? 1204views
Multiple ChoiceYou cross two true breeding lines of petunia. One produces red flowers and the other white flowers. The F1 offspring all show pink flowers. You conclude from this that:227views7rank
Textbook QuestionA man with type B blood and a woman who has type A blood could have children of which of the following phenotypes? a. A or B only b. AB only c. AB or O d. A, B, AB, or O859views