TLS Online TPP Program

#Id: 10296

#Section 2: General Biology

T Cells Undergo Positive and Negative Selection

TLS Online TPP Program

#Id: 8370

#Section 3: Genetics, Cellular and Molecular Biology

In the absence of ATP, the myosin head is firmly attached to the actin filament. 

TLS Online TPP Program

#Id: 8226

#Section 3: Genetics, Cellular and Molecular Biology

I-cell disease

• almost all of the hydrolytic enzymes are missing from the lysosomes of many cell types.

• mis-sorting has been traced to a defective or missing GlcNAc phosphotransferase.

TLS Online TPP Program

#Id: 9206

#Section 3: Genetics, Cellular and Molecular Biology

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.

TLS Online TPP Program

#Id: 8628

#Section 3: Genetics, Cellular and Molecular Biology

APC/C consists of 14 core subunits in metazoans and 13 core subunits in yeast.