Cope’s rule:  A proposed generalization that individual body size in animals tends to increase during evolution.

TLS Online TPP Program

#Id: 9495

#XL - R Botany

TLS Online TPP Program

#Id: 8020

#XL - T Zoology

TLS Online TPP Program

#Id: 9624

#XL - T Zoology

Two Mechanisms Down-Regulate Signaling from RTKs

1. Phosphotyrosine phosphatases

2. Receptor-mediated endocytosis followed by degradation in lysosomes

TLS Online TPP Program

#Id: 8225

#XL - Q Biochemistry

Hurler’s disease- mutation in a structural gene that codes for an individual lysosomal hydrolase.

TLS Online TPP Program

#Id: 9206

#XL - T Zoology

Genetic drift 

Genetic drift is an evolutionary force, in which allelic frequency change over generation Just by chance (sampling error). 

The deviations from the expected ratios are random, the direction of change is unpredictable.