Numerous proteins, including XP products and the transcription factor TFnH, are involved in eukaryotic nucleotide excision repair. 

TLS Online TPP Program

#Id: 405

#Unit 2. Cellular Organization

SpH2B has a long N-terminus and functions in Chromatin packaging

TLS Online TPP Program

#Id: 4760

#Unit 5. Developmental Biology

Embryos lacking PAL-1 have no somatic cell types derived from the C and D stem cells.

TLS Online TPP Program

#Id: 7329

#Unit 11. Evolution and Behavior

Genetic Disorder

An autosomal recessive condition affects 1 newborn in 10,000 in a random mating population without any  disruptive acting force. What is the approximate expected frequency of carriers in this population?

1 in 1000 newborns

1 in 500 newborns

1 in 100 newborns

1 in 50 newborns

TLS Online TPP Program

#Id: 7022

#Unit 5. Developmental Biology

Stem cell niches in the testes of male Drosophila illustrate the importance of local signals, cell-to-cell adhesion, and asymmetric cell division.

TLS Online TPP Program

#Id: 4471

#Unit 13. Methods in Biology

The limit of resolution of a light microscope using visible light is about 0.2 μm (200 nm).