Exam 10: Control of Gene Expression

In flowering plants, petals form when ____ genes are turned on.

What happens to a male's reproductive organ development when the SRY gene is mutated and not expressed?

​An operator is a type of ____ sequence in prokaryotic DNA.

Humans and other mammals can break down ____ in milk, but most do so only when young.

Adding ____ groups to histones tightens the DNA and prevents transcription.

Forms of gene control in eukaryotes include ____ control.

Suppose the PAX6 gene from a human is inserted into an eyeless mutant fly. What will happen?

​A biological process that repeats every day is called a ____.

Match the specific gene expression control activity with the control point at which it occurs. Some choices may be used more than once. -acetyl groups are added to a histone, to loosen the DNA

Match the transcriptional gene expression control factor with the most appropriate description. -These shut off transcription or slow it down.

​An operon contains a ____.

Binding of ____ to ____ in DNA can increase the rate of transcription of specific genes.

A typical differentiated cell uses only about ____ percent of its genes.

Which feature is least likely to be associated with the lac operon?

​Repressors and activators are examples of ____.

In the prokaryotic lac operon system, a repressor remains bound to the ____ unless lactose is present.

​Escherichia coli prefer to use which carbohydrate?

​Operons occur ____.

Match the correct description to the term below. Not all choices will be used. -In an operon, these are all transcribed together into a single RNA strand.

In fruit flies, pattern formation during embryonic development is based on ____.