Heterochromatic regions, silenced genes, and gene-sparse regions of chromosomes are typically localized to 

TLS Online TPP Program

#Question id: 15003

#Unit 8. Inheritance Biology

Laurie met her husband Jim at a support group for families dealing with PKU (phenylketonurea), a recessive genetic disorder. Laurie and Jim both have one sister who is affected with PKU and no other family history of the disorder. They come to you as a genetic counselor to ask what their risk is of having an affected child. What do you tell them?

TLS Online TPP Program

#Question id: 4619

#Unit 11. Evolution and Behavior

Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S.aureus infections were caused by MRSA. How can this best be explained?

TLS Online TPP Program

#Question id: 28478

#Unit 5. Developmental Biology

 Select the correct statements about these transcriptional factors-sox2, oct4 and nanog ?

a) these transcriptional factors activating those genes required to maintain totipotency in embryonic stem cells

b) these transcriptional factors activating those genes required to maintain pluripotency in embryonic stem cells

c) these transcriptional factors repressing those genes whose products would lead to differentiation

TLS Online TPP Program

#Question id: 11423

#Unit 10. Ecological Principles

Our ability to distinguish different biomes under similar conditions in different parts of the world depends primarily on which of the following factors that influence the distributions of growth forms?

TLS Online TPP Program

#Question id: 11609

#Unit 6. System Physiology – Plant

All of gibberellins are tetracyclic diterpenoid acids, but only a few of which, have intrinsic biologically active gibberellins these are__