Darwin’s evolutionary theory - Common descent

TLS Online TPP Program

#Id: 4554

#Unit 8. Inheritance Biology

Two kinds of independence

1. The genes at each locus were independent in their assortment in meiosis
2. The genes were independent in their phenotypic expression
   
   
   

TLS Online TPP Program

#Id: 6777

#Unit 3. Fundamental Processes

Mutation of either the 5′ or the 3′ invariant splice-site bases at the ends of the intron resulted in pre-mRNAs that were bound by snRNPs to form spliceosomes; however, RNA splicing was blocked, and the pre-mRNA was retained in the nucleus. 

In contrast, mutation of both the 5′ and 3′ splice sites in the same pre-mRNA resulted in export of the unspliced pre-mRNA, although less efficiently than for the spliced mRNA, probably because of the absence of an exon-junction complex. When both splice sites were mutated, the pre-mRNAs were not efficiently bound by snRNPs, and consequently, their

export was not blocked.

TLS Online TPP Program

#Id: 1527

#Unit 2. Cellular Organization

The short (∼20 amino acid) C-terminal tails of both α- and β-tubulin that protrude from the microtubule are enriched in glutamic and aspartic acids, the surface of the microtubule possesses a net negative charge.

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#Id: 9484

#Unit 6. System Physiology – Plant

An effector molecule is

made by a pathogen to enhance the pathogen’s colonizing

abilities.

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#Id: 1515

#Unit 2. Cellular Organization

Doublet contains one complete 13-protofilament microtubule (A tubule) and one additional tubules (B tubule) consisting of 10 protofilaments.