Answer:
The phylum Hemichordata is the one that could form an evolutionary connection between the chordates and non-chordates.
Explanation:
To the phylum Hemichordata belongs a genus that scientists believe could explain how the chordates could evolve from the non-chordates. This genus is Balanoglossus, of the class Enteropneusta.
Balanoglossus is similar to a worm, whose habitat is the seabed, and like other hemicordates it has a stomach, a structure that forms part of its digestive system and fulfills the functions of a spine.
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Chordates and non-chordates brainly.com/question/1387264
B , spongy
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Medulla of oblangata (answer C) is part of the brain which is affected of the patient who complain of breathing problems . Medulla of oblangata is a vital center which control visceral activities such as breathing,heart rates,blood pressure, swallowing and vomiting.
Answer:
Osmosis
Explanation:
As mentioned in the question,Pacific sea horse is an organism that face the constant challenge of losing water to their saltier environment. So if the environment is saltier it means that water will be moved from the Pacific horse' body cells into the environment to balance the concentration of salts. This process will happen when water molecules will move down the concentration gradient through selectively permeable membrane's of horse's body. This causes the loss of water from the body of horse and maintaining the salt levels of outside environment. This is called the process of Osmosis.
Here water move from an hypotonic environment (with less salts) into a hypertonic environment (with more salts).
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The correct ones are:
- Differential gene expression affects the developmental process in animals.
- Positional information controls pattern formation.
- Homeotic genes code for transcription factors that control the development of segment-specific body parts.
- Cells receive molecular signals that communicate their position in relation to other cells.
Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product, allowing it to produce end products such as protein or non-coding RNA and, as a result, affect a phenotype.
A homeotic gene is any of a group of genes that control the pattern of body formation in organisms during early embryonic development. These genes encode proteins known as transcription factors, which direct the formation of various body parts.
Molecular signaling refers to molecules that transmit information between cells in the body. However, the molecular properties of signaling molecules can vary greatly.
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brainly.com/question/8832859
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