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TLS Online TPP Program
#Question id: 23477
#General Aptitude
The term computer is generally used for CPU and
TLS Online TPP Program
#Question id: 5265
#Unit 8. Inheritance Biology
The mechanism by which genes are transferred into bacteria via viruses is called
TLS Online TPP Program
#Question id: 15153
#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 parallel with recessive mutations in both genes, 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: 11414
#Unit 10. Ecological Principles
Which of the following combination of species feature that affecting a species’ sensitivity to extinction?
TLS Online TPP Program
#Question id: 2061
#Unit 2. Cellular Organization
Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?