Primitive Streak

The first morphological sign of gastrulation in amniotes

TLS Online TPP Program

#Id: 2501

#Unit 13. Methods in Biology

The higher no. of band will be observed in gradient gel electrophoresis comparison to uniform gel SDS and Native gel electrophoresis.

TLS Online TPP Program

#Id: 7857

#Unit 1. Molecules and their Interaction Relevant to Biology

A freshly-prepared aqueous solution of α-D-glucose, has a specific rotation

A fresh solution of β-D-glucose, on the other hand, has a rotation value of +18.7°

TLS Online TPP Program

#Id: 4047

#Unit 2. Cellular Organization

Heterochromatic regions, which tend to be rich with adenine and thymine (AT-rich) DNA and relatively gene-poor, stain more darkly in G-banding.

In contrast, less condensed chromatin (Euchromatin)—which tends to be rich with guanine and cytosine (GC-rich) and more transcriptionally active—incorporates less Giemsa stain, and these regions appear as light bands in G-banding.

TLS Online TPP Program

#Id: 7673

#Unit 1. Molecules and their Interaction Relevant to Biology

1. Glycine is nonchiral

2. 16 Amino acids have single chiral carbon and they exists in L form and S configuration

TLS Online TPP Program

#Id: 1975

#Unit 10. Ecological Principles

If this ratio R is equal to 1, then the population is randomly dispersed.

If R is significantly greater than 1, the population is evenly dispersed

If R is significantly less than 1, the population is clumped