BRAINCAKEGene Regulation
Housekeeping genes are genes that code for enzymes and proteins that are constantly needed for the normal functioning of the cells and are constitutively expressed. Hormones such as growth hormones are only needed at specific times for a short period of time.
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Key terms in this lesson
- hormone
- A chemical messenger, secreted by an endocrine gland directly into the blood, that travels to target cells bearing complementary receptors and brings about a response.
More in Genetics and Variation
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- Causes of mutations
- Chromosome Mutations
- Controlling Transcription
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- Post-transcriptional control
All 36 lessons in Genetics and Variation · All AQA A-level Biology topics