Chapter 11 homework
Which of the following turns off transcription by binding to the operator
Repressor
What name is given to a gene that causes cancer?
oncogene
In an operon the ___ acts as an on/off switch.
operator
Which of these is a type of posttranscriptional regulation of gene expression?
Breakdown of proteins
Which of the following is NOT a possible use of reproductive cloning?
Creating stocks of stem cells for human therapeutic use
What is the first level of control of a eukaryotic gene transcription?
DNA packing and unpacking
What is a difference between embryonic and adult stem cells?
Embryonic stem cells are undifferentiated; adult stem cells are partially differentiated.
The process by which genotype becomes expressed as a phenotype is
Gene expression
The "master control genes" that regulate other genes and determine what body parts will develop in which locations are called?
Homeotic genes
Which of these is most likely to cause the development is a six legged frog
Mutation of homeotic genes
Introns are
Non coding DNA sequences
The lac operon is usually in the____ position and is activated by ____
Off ____lactose
How many active X chromosomes are there in a cell of a female mammal?
One
Repressors act by blocking the binding of _____ to the promoter.
RNA polymerase
In eukaryotic cells, repressor proteins inhibit transcription by binding to
Silencers
What would enable a single RNA transcript to be translated into different polypeptides
The RNA transcript can be spliced more than one way
The Initiation of transcription requires that enhancers bind to
Transcription factors
How is that the cells in different body tissues are able to perform different functions?
The cells exhibit different patterns of gene expression
When referring to cell division, oncogenes are most like______while tumor suppressor genes are most like_____.
The gas pedal on a car _____brake pedals on a car
Many proto-oncogenes regulate ______.
cell division
