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TLS Online TPP Program
#Question id: 10571
#Unit 10. Ecological Principles
Uniform spacing patterns in plants such as the creosote bush are most often associated with
TLS Online TPP Program
#Question id: 19099
#Unit 6. System Physiology – Plant
Xanthomonas oryzae secretes a highly conserved sulfated peptide called__
TLS Online TPP Program
#Question id: 23810
#General Aptitude
Video transmission over the Internet that looks like delayed live casting is called:
TLS Online TPP Program
#Question id: 15154
#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 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 parallel with a recessive mutation in one gene and a dominant mutation in the other, determine the phenotype of the F1 progeny and the expected phenotypic ratio of red to white eyed insects in the F2.
TLS Online TPP Program
#Question id: 23782
#Unit 7. System Physiology – Animal
Where is rhodopsin located in the cell?