How Genes and the Environment Affect Phenotypic Expression (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the term phenotype refer to in an organism?
What does the term phenotype refer to in an organism?
Observable characteristics only
What is the key difference between genotype and phenotype?
What is the key difference between genotype and phenotype?
Genotype is genes; phenotype is traits
Why do Siamese cats have dark pigmentation at their extremities?
Why do Siamese cats have dark pigmentation at their extremities?
Allele produces pigment at low temps
How does soil pH affect hydrangea flower colour?
How does soil pH affect hydrangea flower colour?
Acidic soil=blue; alkaline soil=pink
What does pluripotent mean in relation to embryonic stem cells?
What does pluripotent mean in relation to embryonic stem cells?
Can give rise to any tissue type
What effect does DNA methylation have on gene transcription?
What effect does DNA methylation have on gene transcription?
Represses transcription
What is the primary effect of acetylation on DNA?
What is the primary effect of acetylation on DNA?
Makes DNA accessible to RNA polymerase
What methylation pattern was found in cancerous colorectal tissue compared to normal tissue?
What methylation pattern was found in cancerous colorectal tissue compared to normal tissue?
Less methylation in cancer cells
How can phenylketonuria (PKU) symptoms be controlled?
How can phenylketonuria (PKU) symptoms be controlled?
Diet low in phenylalanine proteins
At how many main stages can gene expression be regulated in eukaryotes?
At how many main stages can gene expression be regulated in eukaryotes?
Six stages