A terаtоmа is а tumоr cоmposed of several different types of tissue that can include muscle, teeth, hair, or bone. Teratomas develop from germ cells, a type of cell that gives rise to gametes. Because germ cells are not differentiated into specific cell types (as are e.g. muscle cells, skin cells, fat cells, etc.), teratomas can develop exhibiting numerous different cell types, giving them their name teratoma, Greek for “monstrous tumor”. Teratomas may be benign or cancerous. As a result of mistakes in processes of cell division, they are generally diploid, and sometimes polyploid. Consider a cell of a teratoma and a healthy human epithelial (skin) cell. Now consider the DNA and the three types of RNA (mRNA, tRNA, and rRNA) found in both cells. For each of these (DNA, mRNA, tRNA, and rRNA), compare what you would expect to find in both the teratoma and a healthy cell. Would the DNA and RNA be the same, or different, or a mixture of same and different, in both cells? Please explain briefly but clearly for each of these four nucleic acids and provide examples or reasons. Label each of your answers 1 through 4 and write a short paragraph (a sentence or two) for each. Copyright 2024 by Edmonds College Department of Biology. All rights reserved. Online sharing or distribution is prohibited. For exam use only in BIOL& 211: Majors Cellular Biology at Edmonds College. Outside help is not allowed. 1) DNA in teratoma vs. healthy cell 2) mRNA in teratoma vs. healthy cell 3) tRNA in teratoma vs. healthy cell 4) rRNA in teratoma vs. healthy cell Photo credits: https://emedicine.medscape.com/article/281850-overview (left) and Ed Uthman, MD. http://web2.airmail.net/uthman/specimens/index.html (right)
Accusаtiоns оf "reverse discriminаtiоn" аffected affirmative-action programs in the 1970s and beyond.