Homeotic genes are master regulator genes that direct the development of particular body segments or structures. ... Most animal homeotic genes encode transcription factor proteins that contain a region called the homeodomain and are called Hox genes.
Answer:
true
Explanation:
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The answer is a Gland.
It is a cell or organ that secretes substances for use elsewhere in the body, or for elimination as waste. Secretion being a product of gland if it's useful to the body and an excretion being a product of the gland if it's a waste product. Glands may be exocrine or endocrine; endocrine glands lose contact with surface; have no ducts; secretes products directly into the blood due to having a high density of blood capillaries while exocrine glands secretes to the body surface or lumen; and maintain contact with surface via a duct.
Answer:
The first living organism on Earth are Bacteria in the first era.
Explanation:
Bacteria are the first organism to leave be on Earth. They came into existence about 3.5 billion years in the first era in the waters of small oceans. Then there were anaerobic hetetrophic bacteria because the atmosphere was free of oxygen before. Cyanobacteria then became the first autotrophic organisms and first photosynthesizer that release oxygen to the atmosphere after photosynthesis.
