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WorksheetsEPIGENETICS
Total questions: 21
Worksheet time: 11mins
The complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes.
Epigenome
DNA
genome
genetic markers
The study of the inherited changes in gene expression that occur without a change in gene sequence and influence how an organism's genes express themselves. Mechanisms are influenced by food and environment. They play an important role in the fetal basis of adult disease susceptibility.
bionomics
genomics
genetics
epigenetics
Increases gene transcription
methylation
DNA acetylation
repressors
helicase
Protein molecules around which DNA is tightly coiled in chromatin
histones
casein
nucleosome
chromosome
A chemical modification of DNA that does not affect the nucleotide sequence of a gene but makes that gene less likely to be expressed.
activators
methylation
acetylation
proteins
How can a person's muscle cells have the same exact DNA sequences as their nerve cells even though the look and perform completely different?
The two different cells become mutated
They actually have different DNA in the two types of cells.
The proteins expressed in each cell are different
The genome of the different cells changes
Which of these molecules gets translated?
DNA
tRNA
double-stranded RNA
mRNA
What is a Gene?
A segment of DNA that encodes for a protein
A segment of RNA that encodes for a protein
Chromosome
chromatin
What does a promoter do?
it creates a DNA segment
controls transcription of gene (on/off)
it allows a gene to be transcribed
What is an operon?
a part of a ribsome
a part of a Rna
a unit made up of linked genes that code for proteins needed to do a specific task
needed for DNA replication
A protein that binds to the operator and blocks the RNA polymerase
activator
repressor
regulator
corepressor
In the lac operon, the genes within the operon will be expressed if:
lactose is absent in the cell
glucose is absent in the cell
galactose is present in the cell
lactose is present in the cell
Epigenetics refers to changes in:
DNA sequence
Gene structure
Gene expression
DNA frequency
Which of the following is not an example of an epigenetic cause of trait variation?
Histone acetytlation
Different exon sequences
Imprinting
X-chromosome inactivation
In terms of epigenetics, acetylated histones usually result in which of the following?
Increase in transcription/ gene expression
Decrease in transcription/ gene expression
Increase in DNA - lamina association
Decrease in DNA - lamina association
What is an epigenomics?
focuses on processes that regulate how and when certain genes are turned on and turned off,
is the study of how genes and how traits are passed down from one generation to the next.
is a multitude of chemical compounds that can tell the genome what to do.
Euchromatin ...
genetically active
Genetically inactive
condensed
present in both prokaryotes and eukaryotes
Heterochromatin ...
genetically active
present only in eukaryotes
present in both prokaryotes and eukaryotes
consists of less amount of DNA
When the repressor is not present, this enzyme carries out the
transcription of lac genes.
Repressor protein
operator
RNA polymerase
lactose
Anti-codon ...
The sequence of bases that serves as the
“language” of life
A chain of amino acids
The decoding of an mRNA message into a
protein
A sequence of three bases on a tRNA molecule
that is complementary to a sequence of bases
on an mRNA molecule
A group of genes that are regulated together is called a(n)
operator
promoter
operon
repressor
