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 âdegenerateâ because
there are more codons than amino acids.
there are more amino acids than codons.
different organisms use different codons to encode the same amino acid.
some codons specify more than one amino acid.
Three general mechanisms appear to be responsible for the conversion of proto-oncogenes to oncogenes
overexpression, point mutations, deletions
inversions, translocations, methylation
familial, sporatic, phosphorylation
None of the above account for the conversion of proto-oncogenes into oncogenes
Transcriptional control of genes that acts by regulating the continuation of transcription is called
induction
attenuation
antitermination
negative inducible control
The genetic code is fairly consistent among all organisms. The term used to describe this consistency is
redundant
resilient
universal
the central dogma
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?
0.7
0.3
0.245
0.15
DNA synthesis is always from 5â to 3â because
replication must be continuous
the strands are antiparallel
primers lack 3â to 5â exonuclease activity
none of the above
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?
0.7
0.3
0.245
0.15
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.
1/8
1/16
9/16
9/32
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 âdegenerateâ because
| there are more codons than amino acids. |
| there are more amino acids than codons. |
| different organisms use different codons to encode the same amino acid. |
| some codons specify more than one amino acid. |
Three general mechanisms appear to be responsible for the conversion of proto-oncogenes to oncogenes
| overexpression, point mutations, deletions |
| inversions, translocations, methylation |
| familial, sporatic, phosphorylation |
| None of the above account for the conversion of proto-oncogenes into oncogenes |
Transcriptional control of genes that acts by regulating the continuation of transcription is called
| induction |
| attenuation |
| antitermination |
| negative inducible control |
The genetic code is fairly consistent among all organisms. The term used to describe this consistency is
| redundant |
| resilient |
| universal |
| the central dogma |
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?
| 0.7 |
| 0.3 |
| 0.245 |
| 0.15 |
DNA synthesis is always from 5â to 3â because
| replication must be continuous |
| the strands are antiparallel |
| primers lack 3â to 5â exonuclease activity |
| none of the above |
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?
| 0.7 |
| 0.3 |
| 0.245 |
| 0.15 |
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.
| 1/8 |
| 1/16 |
| 9/16 |
| 9/32 |
