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 directly into the blood by an endocrine gland, that travels to target cells and alters their activity.
More in Genetics and Variation
- Change in Protein Function
- Sickle-cell Anaemia
- Causes of mutations
- Chromosome Mutations
- Controlling Transcription
- Lac Operon
- cyclic AMP
- Post-transcriptional control
All 36 lessons in Genetics and Variation · All OCR A-level Biology topics