AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

GENE MUTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Specialized cells in our body express ____ (textbook pg 148)
A
all of the genes contained in the cell’s DNA.
B
approximately 90% of the genes it possess.
C
basal regulated genes released by the brain.
D
only specific genes it needs to carry out its function.
Explanation: 

Detailed explanation-1: -Most of the specialized cells in a multicellular organism are capable of altering their patterns of gene expression in response to extracellular cues.

Detailed explanation-2: -Different cells in a multicellular organism may express very different sets of genes, even though they contain the same DNA. The set of genes expressed in a cell determines the set of proteins and functional RNAs it contains, giving it its unique properties.

Detailed explanation-3: -The genes which are expressed in all cell types and almost all the time. These genes are called housekeeping genes.

Detailed explanation-4: -Specialized cells regulate the expression of genes because they? Do not need the proteins that are specified by certain genes.

There is 1 question to complete.