In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?

TLS Online TPP Program

#Question id: 22939

#Unit 5. Developmental Biology

CO gene expression appears to be highest in the companion cells of the phloem of leaves and stems, the downstream target gene of CONSTANS is

TLS Online TPP Program

#Question id: 23755

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following is always found in 'Wonder'?

TLS Online TPP Program

#Question id: 662

#Unit 1. Molecules and their Interaction Relevant to Biology

________ received a Nobel Prize in 1964 for determining the structure of vitamin B12. He/she also solved the structure of penicillin in 1947 and developed many techniques used in the study of large proteins.

TLS Online TPP Program

#Question id: 5011

#Unit 11. Evolution and Behavior

A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from lungs of an ancestral fish is an example of

TLS Online TPP Program

#Question id: 12338

#Unit 10. Ecological Principles

Ecology as a discipline directly deals with all of the following levels of biological organization except