In the thymic medulla, the majority of γδ T-cells are:

TLS Online TPP Program

#Question id: 13021

#Unit 10. Ecological Principles

Which marine zone would have the lowest rates of primary productivity (photosynthesis)? 

TLS Online TPP Program

#Question id: 15877

#Unit 12. Applied Biology

Zinc as micronutrient is used in culture media for____

TLS Online TPP Program

#Question id: 17267

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. Estimate q, the frequency of allele a, in Generation 1. Show your calculations. 

TLS Online TPP Program

#Question id: 9208

#Unit 9. Diversity of Life Forms

Which of the following threats to biodiversity is targeted at specific species rather than groups of species?

TLS Online TPP Program

#Question id: 11174

#Unit 10. Ecological Principles

Why might a peahen choose to mate with a peacock with a long, gaudy tail?