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Oduvanchick [21]
2 years ago
7

How does a prokaryotic cell know how to reproduce?

Biology
2 answers:
Olin [163]2 years ago
7 0
<span>Prokaryotic cells reproduce by a process that is called binary fission. The DNA in such cells is contained in a single circular chromosome called a plasmid within the cytoplasm. The reproductive process starts with the replication of the chromosome.</span>
xeze [42]2 years ago
4 0
They reproduce by a process know as binary fission. 
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To which group does the pine true?
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Pine trees are conifers!

Explanation:

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Briefly describe how amniocentesis and chorionic villi sampling are used in genetic screening.
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Answer:

Amniocentesis is an invasive method that involves the aspiration of 10-20 ml of fetal water through the abdominal wall under ultrasound-guided control. In most cases, the procedure is performed around the 16th week of gestation. The fetal water sample contains fetal cells, mostly cells of fetal skin and the epithelium of the urinary tract.

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Explanation:

The amniocentesis procedure carries a risk of miscarriage of 0.5-1%.  After aspiration of the fruit of the water, the sample is centrifuged to separate the cells from the amniotic fluid. Separate cells are seeded on a nutrient medium (cell culture) that stimulates cell growth. After about 14 days, the cell culture is further used for various genetic or biochemical analyzes such as karyotyping.

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