Those individuals reproduce once only and die are the type of organisms____

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#Question id: 12903

#Unit 13. Methods in Biology

A gene isolation system that uses adapted vectors termed as_______

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#Question id: 26586

#Unit 3. Fundamental Processes

Telomeres form a looped structure in the cell called as t-loop and it is accomplished by

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#Question id: 3685

#Unit 3. Fundamental Processes

In prokaryotes, DNA replication begins at a single site that is rich in AT nucleotide sequence, where two strands unwind and separate. This ATP dependent process catalyzed by a protein

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#Question id: 28556

#Unit 5. Developmental Biology

In Dictyostelium, Neighboring cells respond to cAMP by which phenomenon?

a) inducing genes involved in cAMP synthesis and detection

b) Initiate a movement toward the cAMP pulse for about a minute

c) Release cAMP of their own

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#Question id: 15149

#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, what will be the phenotype in F1 progeny?