BIOL 202 Lecture Notes - Lecture 8: Tata Box, Transcription Factor Ii D, Tata-Binding Protein

Which of the following statements are true?

a. All eukaryotic genes contain enhancers, one or more proximal elements, and a core promoter with TATA box.

b. TFIID is required for RNA polymerase to bind at proximal elements.

c. Enhancers can be located upstream or downstream of genes or even within introns.

d. General transcription factors are required for RNA polymerase to bind at enhancer regions.

e. two of the above statements are true

The TATA-binding protein (TBP) binds to the TATA box sequence in eukaryotic promoters. What is its function in transcriptional initiation?

It blocks access of RNA polymerase to the promoter, until removed by general transcription factors.

It is the subunit of prokaryotic RNA polymerase that is required to recognize promoters.

It modifies histones so nucleosomes can be removed from DNA for transcription.

It bends and partly unwinds DNA at a promoter.

The genetic code is said to be “degenerate” because

Three general mechanisms appear to be responsible for the conversion of proto-oncogenes to oncogenes

Transcriptional control of genes that acts by regulating the continuation of transcription is called

The genetic code is fairly consistent among all organisms. The term used to describe this consistency is

The F, G, and H loci are linked in the order written. There are 30 cM between F and G and 30 cM between G and H. If a plant Ff Gg Hh is testcrossed, what proportion of the progeny will be ff gg hh, assuming no interference?

DNA synthesis is always from 5’ to 3’ because

The F, G, and H loci are linked in the order written. There are 30 cM between F and G and 30 cM between G and H. If a plant Ff Gg Hh is testcrossed, what proportion of the progeny will be ff gg hh, assuming no interference?

In the ZZ-ZW sex-determination system, if an AaBb female was crossed to an individual of genotype Aa Bb, what is the probability of a female offspring with the two dominant traits given by alleles A and B? Assume A and B are dominant alleles.