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shepuryov [24]
3 years ago
12

If the rice already had the genes that could make vitamin A, why did scientists use genes from other organisms?

Biology
1 answer:
meriva3 years ago
7 0

Answer:

A. The rice genes didn't make the right type of vitamin A.

Explanation:

Regular white rice does not have the gene to produce beta carotene. The human body converts the beta carotene into vitamin A.

To increase the nutritional value of rice, the gene for beta carotene from daffodil flowers was inserted into the cells of endosperm of rice.

This allowed these cells of the genetically engineered rice varieties to produce beta carotene. Production of beta carotene imparted golden color to the rice grain and hence, the name.

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In a water molecule the electrons are not equally shared , creating a ____ molecule .
zalisa [80]

Answer:

Polar

Explanation:

In a water molecule, the oxygen atom is bigger and has a greater pull on the electrons than the hydrogen atoms do. This makes the molecule polar.

3 0
2 years ago
Which of these conditions is not among the requirements of the hardy-weinberg equilibrium?
Inessa05 [86]

Hardy-Weinberg equilibrium requires no immigration or emigration, a large population, random mating, and no spontaneous mutations (all of which are virtually unavoidable in nature). Natural selection would violate these conditions.

Explanation:

4 0
2 years ago
Why do dolphins kill more people every year than sharks?
Alik [6]

Answer:

Dolphins use their strong snouts as a powerful weapon to ram sharks, targeting their soft underbellies and gills to cause injuries. Sharks pose less of a threat to larger members of the dolphin family. Indeed, orcas are the top predator in the ocean and small sharks are a target for some populations.

8 0
2 years ago
Why would you learn less about an organism if it is were isolated from its surroundings than if you were able to observe the sam
Dahasolnce [82]

Answer:

this one`s been up for debate for awhile now.

1. it depends on the organism

learning about an organism could be considered 'easier' to study in different ways. for example, if you are studying marine life, you will most likely have to keep it in a water habitat to watch it alive. If you are studying a land species, then watching from it`s natural habitat will give you more accurate results. sometimes the environment can affect an organisms internal systems more than you may think. this leads into my second point.

2. it depends on what you are trying to study

if you are trying to learn about the mating process, seasonal activity, migration, or external behavior, then monitoring it from it`s natural habitat or an area that is a close copy is your best option. but if you are looking into studying internal organs/systems or cells, then in <em>most</em> cases, the organism will need to be taken out of its natural habitat. only in very careful situations is it left in a habitat during examination.

5 0
2 years ago
Without the radioactive probes, would the DNA show up on the x-ray film?
natulia [17]
Its a yes or no question and I think the answer is no
3 0
3 years ago
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