Match Each Term with Its Definition

question 91

Multiple Choice

Match each term with its definition.
-siRNA

• A)regulatory protein that activates the expression of an operon's genes
• B)interfering RNA molecules originally encoded by nuclear DNA
• C)process of controlling the expression of genes that takes place at the DNA level
• D)regulatory protein that prevents an operon's genes from being expressed
• E)inhibition of transcription via DNA methylation
• F)interfering RNA molecules associated with some viral life cycles
• G)tumour comprising cells that invade and disrupt the surrounding tissues
• H)increases expression of an operon's genes
• I)cluster of prokaryotic genes and their associated DNA regulatory sequences
• J)tumour comprising undifferentiated cells that stay together in a single mass
• K)spread of malignant cells through the blood or lymphatic system
• L)removes a nucleosome from DNA to expose a promoter

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Definitions:

Trace

A very small amount of something.

Natural Selection

The evolutionary process by which favorable traits become more common in successive generations of a population, influenced by environmental pressures.

Variations

Differences within populations, which can be genetic, phenotypic, or behavioral, contributing to the diversity of organisms.

Morphological Divergence

Evolutionary pattern in which a body part of an ancestor changes differently in its different descendants.