Gene Regulation Increases Variation

An organism has two copies of a ____ for each feature

• gene

• trait

• cell

• variation

Tags

NGSS.HS-LS3-1

_______ are the instructions for making protein molecules.

• Genes

• Traits

• Variations

• Features

Tags

NGSS.HS-LS1-1

A type of control element that acts with transcription factors to promote initiation may be perceived as a distal control element. This control element is called a(n):

A mutation within the promoter region has occurred. What would potentially happen to transcription rate?

• Mutated promoters decrease the rate of transcription.

• Mutated promoters increase the rate of transcription.

• Mutated promoters can increase or decrease the rate of transcription.

• Mutated promoters cease transcription of the adjacent gene.

A lack of this nonprotein molecule would result in the inability of the cell to "turn off" genes:

• Operon

• Inducer

• Promoter

• Repressor

• Corepressor

Gene Regulation Increases Variation

• Gene regulation can lead to different phenotypes from the same genotype.

• Gene regulation decreases genetic diversity.

• Gene regulation has no effect on phenotypic variation.

• Gene regulation only affects prokaryotic organisms.

Gene Regulation Increases Variation

• Transcription factors can bind to DNA and influence gene expression.

• Transcription factors are only found in prokaryotes.

• Transcription factors decrease genetic variation.

• Transcription factors are enzymes that degrade mRNA.

Tags

NGSS.HS-LS3-2

Gene Regulation Increases Variation

• Epigenetic changes can be inherited and affect gene expression.

• Epigenetic changes are always permanent.

• Epigenetic changes do not affect gene expression.

• Epigenetic changes only occur in response to environmental factors.

Tags

NGSS.HS-LS3-2

Gene Regulation Increases Variation

• Alternative splicing allows a single gene to code for multiple proteins.

• Alternative splicing reduces the number of proteins a gene can produce.

• Alternative splicing is a form of genetic mutation.

• Alternative splicing occurs only in prokaryotes.

Gene Regulation Increases Variation

• RNA interference can silence specific genes and affect phenotype.

• RNA interference increases the expression of all genes.

• RNA interference is unrelated to gene regulation.

• RNA interference only occurs in plants.

Tags

NGSS.HS-LS3-2