Embryos from homozygous skn-1-deficient mothers lack both pharyngeal mesoderm & endoderm derivatives of EMS.

TLS Online TPP Program

#Id: 4793

#Unit 13. Methods in Biology

Mean = [number of observations]/[total number of observations]

For grouped data, mean is:

TLS Online TPP Program

#Id: 5515

#Unit 10. Ecological Principles

Natality means production of new individuals (offspring). 

Maximum or Absolute natality - maximum offspring produced under most suitable environmental conditions. 

Ecological natality - refers to number of offspring produced under prevailing environmental conditions.

TLS Online TPP Program

#Id: 7171

#Unit 5. Developmental Biology

During cleavage, β-catenin enters the nuclei and binds with Tcf3 to form a transcription factor that activates genes encoding proteins Siamois and Twin.

TLS Online TPP Program

#Id: 9482

#Unit 6. System Physiology – Plant

Four major pathogens infects plants most frequently

1. Viruses

2. Bacteria

3. Fungi

4. Insects

TLS Online TPP Program

#Id: 6934

#Unit 8. Inheritance Biology

Chromosome inversion, in which a chromosome segment is inverted—turned 180 degrees.