Genetics and Epigenetics (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is genetics the study of?
What is genetics the study of?
Heredity and trait inheritance
What is a key feature of epigenetic changes compared to genetic changes?
What is a key feature of epigenetic changes compared to genetic changes?
They are reversible
What is the genome?
What is the genome?
Complete set of genetic material
What is a gene?
What is a gene?
A DNA section coding for a protein
In methylation, what chemical group attaches to DNA?
In methylation, what chemical group attaches to DNA?
methyl group
What happens in histone modification?
What happens in histone modification?
DNA wraps tightly around histones
Which is NOT listed as an environmental factor affecting gene expression?
Which is NOT listed as an environmental factor affecting gene expression?
Blood type
Why can identical twins develop different characteristics over time?
Why can identical twins develop different characteristics over time?
Different epigenetic patterns
What causes sex hormone production to begin at puberty?
What causes sex hormone production to begin at puberty?
Epigenetic changes switch genes on
How does smoking potentially lead to cancer through epigenetics?
How does smoking potentially lead to cancer through epigenetics?
Removes methyl groups from genes
Where does the Himalayan rabbit have white fur?
Where does the Himalayan rabbit have white fur?
On warmer body areas
How many chromosomes are in human gametes (sex cells)?
How many chromosomes are in human gametes (sex cells)?
23
What defines a species?
What defines a species?
Organisms that interbreed for fertile offspring