The number of chromosomes in a sex cell is half the number of chromosomes in a body cell. Think of it this way: 1 egg (women sex cell) combine with 1 sperm (male sex cell) to make 1 whole cell.
Explain how the reactions of “the bloodless ghouls” to Orpheus’s song in paragraph 3 are important to the overall theme of the story. Cite evidence from the story in your response.
to separate Earth's four hemispheres
A 40-year-old male undergoes a type of bone growth known as appositional growth. This growth produces an increase in the diameter of bones.
Appositional growth is a type of bone growth caused by the addition of new bone tissue layers at the surface of the bones.
In appositional growth, the cartilage grows in its diameter by the addition of extracellular matrix on the peripheral cartilage surface.
During this process, cartilage-forming cells secrete more extracellular matrix against the external side of the cartilage tissue.
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Answer:
a. hox genes.
Explanation:
HOX genes have the following functions:
- HOX genes are the homeobox subset.
- They specify the areas of the embryo's body plan along the animal head-tail axis.
- They are encoding Hox proteins that specify the position characteristics and ensure that the right structures form at the right position in the body.
- They regulate high-level executive genes, such as transcription factors and intracellular signaling molecules, which adhere, number, form, and growth to cells.
The vertebrates are highly preserved.
The clusters and other genes occur uninterrupted.
Evolutionary, the heterogeneous regulatory areas between the genes most previously present are larger and more preserved than those present at the other ends of the clusters.
The characteristical feature is that these are homeodomain proteins with a highly preserved area of DNA binding encoded with homeobox gens.
