A mutant phenotype is produced by an individual of the blood group AB, due to some genetics effect  it produces only one copy of the gene another  copy of the gene is missing. this condition is known as

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#Question id: 4455

#Unit 3. Fundamental Processes

The __I is connected to the II by a flexible linker, although the II is embedded in the body of the enzyme, the I can reach the upstream element and can do so even when that element is not located immediately adjacent to the –35 region, but further upstream.

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#Question id: 30101

#Unit 1. Molecules and their Interaction Relevant to Biology

The formation of dATP for DNA synthesis occurs primarily by:

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#Question id: 28527

#Unit 5. Developmental Biology

 Which of the following  gene encodes an acetyl-CoA carboxylase which crucial for proper patterning of the apical portion of the embryo?

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#Question id: 5024

#Unit 11. Evolution and Behavior

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?

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#Question id: 15150

#Unit 8. Inheritance Biology

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, the F1 progeny shows will have red eye, what is the expected phenotypic ratio of red to white eyed insects in the F2.