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Which are the two body cavities that form during embryonic development?
Wiki User
∙ 13y ago
Coelom and Peritoneal cavity
Wiki User
∙ 13y ago
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Genes located in different regions of the body during embryonic development may be which turned on and off never turned on turned on and left on activated for different times in different cells or all?
All of the above
An embryo has many cells which change to become specialized?
During embryonic development cells specialize to form tissues. Mitotic cell division is very important during body growth. After this time muscle tissue becomes amniotic.
During pregnancy which of the mothers body cavities increases most in size?
The pelvic cavity increases most in size during pregnancy
What type of tissue is the main tissue in the skin and the lining of body cavities?
In general, they are epithelial tissues which are in the skin and line body cavities.
What happens to Genes located in different regions of the body during embryonic development may?
the options are a. turned on and off b. never turned on c. turned on and left on d. activated for only a short time in one cell and a long time in another cell e. all of these
Genes located in different regions of the body during embryonic development may be what?
turned on and off
One way master control genes or hox genes could have affected evolution is?
Through small changes during embryonic development that led to different body plans
What are the five key evolutionary changes in the animal body plan?
The evolution of symmetry, tissues, a body cavity, patterns of embryonic development, and segmentation (repeated body units). Symmetry is found as radial symmetry (halves of the body mirror each other) and bilateral symmetry (symmetric in every direction). Cells differentiate into tissues which allows for specialized structures and functions. The evolution of body cavities allowed for the evolution of organ systems. There are 2 patterns of embryonic development in bilateraly symmetrical animals: protostomes and deuterostomes. Other embryonic development classifications are cleavage patterns (spiral and radial), determinate or indeterminate development, and coelom formation. With segmented animals, each segment has a set of organ systems. This is advantageous because if one segment is damaged, the animal will not die. Segmentation also allows animals to move more effectively since the segments can move fairly independently.
What structures is the first sign of a human body forming during the embryonic period?
An embryo is what an organism is in its first stage of development after conception. The first tissues to form are the ectoderm, mesoderm, and endoderm.
What cavities of the body can you name?
What cavities of the body can you name?
Genes located in different regions of the body during embryonic development may be which turned on and off never turned on turned on and left on activated for different times in different cells or all?
All of the above
What are the major body cavities?
ventral and dorsal body cavities are the major two for the body.
What is the body cavities and how are they used in health care?
Body cavities are internal cavities in the body with an external entrance. In health there are different reasons to examine body cavities. In law enforcement there are different reasons. Searching for things mainly.
An embryo has many cells which change to become specialized?
During embryonic development cells specialize to form tissues. Mitotic cell division is very important during body growth. After this time muscle tissue becomes amniotic.
What are major characteristics of the phylum?
some of the major characteristics of the phylum are a shared body plan, embryonic development patterns, and specific molecular sequences.
What produces the embryonic body?
cleavage
During pregnancy which of the mothers body cavities increases most in size?
The pelvic cavity increases most in size during pregnancy
