- DNA codes fail to match accurately.
- The environment.
- Disclosure to chemical or radiation.
- <span> Mistake in the cellular machinery</span>
Fossils are the remains or impression of the dead animals and plants that lived in the past.
Answer:
The correct option is A. Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene.
Explanation:
Steroid hormones are derived from cholesterol and regulate multiple biological processes. All steroid hormones exert their action by crossing the plasma membrane and by binding with their respective intracellular receptors. They stimulate cell growth in a very different way, their lipophilic nature gives them the ability to cross lipid barriers, so, without the need for extracellular signals, these hormones can easily enter the cell, cross the cytoplasm and reach the nucleus. There they bind to specific receptors that are associated with DNA promoter regions, modifying their structure and promoting the expression of the genes under their control.
The system dependent [passive] recovery process for small appliances CAPTURE REFRIGERANT INTO NON-PRESSURIZED, SPECIAL CHARCOAL ACTIVATED PLASTIC BAG CONTAINER. A small appliance refers to a device manufactured, charged and sealed in a factory and which cost five pounds or less.
