Answer:
placenta
Explanation:
Placenta is an essential organ that develops to connect the unborn baby with the mother womb. The placenta is connected to the fetus through the umbilical cord . All essential nutrients, gases such as oxygen, and other substances are transported from the blood of the mother to the baby via placenta and umbilical cord.
Along with supply of essential substances, the waste products generated by the fetus such as carbon dioxide, waste after food digestion etc. are sent back through the blood vessels of the umbilical cord to the placenta of the mother.
Changes in local environments can have global effects for several reasons. Animals, like birds, migrate from region to region. A change in one of their environments can cause behavioral changes which will affect other organisms living in these environments. Air and water move among regions.
Answer: 20 fragments
Explanation:
This particular restriction enzyme has a 4 bp (base pair) recognition sequence therefore it will cleave once every 4ⁿ bases where n indicates the number pf bases in the recognition sequence.
- The recognition sequence is 4 bp therefore this restriction enzyme cleaves once every 4⁴ = 256 bases. This is the length of the restriction fragment.
- Calculate the number of fragments by dividing the total number of bases ( where you assume equal frequency of bases ie. A+T = C+G) by the length of the restriction base.
- therefore 5000bp/256bp = <u>19,53</u> now this number ca n be rounded up to 20.
- The expected number of fragments on the electrophoresis gel will be 20 fragments.
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