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Goryan [66]
3 years ago
12

What peculiar feature did Darwin find in the tortoises on the Galapagos Islands?

Biology
1 answer:
Salsk061 [2.6K]3 years ago
3 0
They were gigantic. Way bigger than a normal toroise
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How are viruses spread from cell to cell?
abruzzese [7]

Answer:

Replicate itself into the cell host

Explanation:

Visus is made from a protein capsule and inside a fragment of RNA. Sometimes they also have some feet of filament to get attached to the cellular membrane.

Once attached, the virus injects its RNA into the cytoplasm and travels to the nucleus and insert this fragment of RNA into the cell DNA and start making copies of itself.

When the cell is full of virus, the membrane breaks and releases all the new virus to the neighbor cells, and the process starts again.

7 0
3 years ago
What are the mechanisms by which aneuploidy and polyploidy are caused? What are the mechanisms by which aneuploidy and polyploid
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The correct answer is:

The principal cause of aneuploidy is chromosome nondisjunction during mitosis or meiosis. Polyploidy in nature can result either from the duplication of euploid chromosome sets from a single species or from the combining of chromosome sets from different species.  

Aneuploidy is a phenomenon when there is the presence of an abnormal number of chromosomes in a cell (an extra or missing chromosome). Usually it appears as a result of improper cell division (chromosomes don’t separate) and it can cause many genetic disorders.

Polyploidy refers to a state when there are more than two sets of chromosomes (one from mother one from father). Triploid (three sets of chromosomes) and tetraploid (four sets of chromosomes) chromosomes are examples of polyploidy. This phenomenon is most common in plants.

5 0
3 years ago
Which best describes the ovary? It produces progesterone. It does not influence breast development. It produces testosterone. It
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<span>It produces progesterone.The ovaries produce the female hormones estrogen and progesterone, in addition to a minute quantity of testosterone. Each ovary has thousands of follicles competent of generating eggs for fertilization. The brain cause the ovaries to develop a single mature egg cell for potential fertilization.</span>
6 0
3 years ago
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Additional compounds can be added to agar before sterilization (or sometimes after). an example of this is "milk agar," in which
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The lactose-digesting bacteria like to grow on milk agar .Bacillus cereus growth and survival were examined during the production of cheese of the Gouda variety. Approximately 102 B. cereus spores per milliliter of cheese milk were intentionally added to pasteurized milk before it was used to make the cheese in the pilot plant.

"milk agar," in which 2% nonfat powdered milk is added to the agar base. lactose-digesting bacteria like to grow on milk agar. Surface plating on B. cereus selective medium was used to count B. cereus, while lactic acid bacteria were counted on lactic agar and MRS agar (de Man-Rogosa-Sharpe). Samples of the milk before renneting, the curd at cutting, the half-whey removal, the final whey removal, the hooping of the curd, the cheese after pressing, the cheese after brining, after one week, after two weeks, after four weeks, and after six weeks were all taken for microbiological analysis. The growth of lactic acid bacteria during cheese production was unaffected by B. cereus.

Learn more about B. cereus here-

brainly.com/question/15087595

#SPJ4

3 0
1 year ago
You are a veterinarian working for the San Diego Zoo. Today, you are performing an autopsy on a 22.7-gram frog and a 21.2-gram l
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3 years ago
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