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viktelen [127]
3 years ago
13

FIRST TO ANSWER GETS MARKED BRAINLIEST!!! WORTH 20 PTS!!!

Biology
1 answer:
sladkih [1.3K]3 years ago
3 0

Answer:

Explanation:

A duplicated chromosome is made up of two identical chromatids which are also called sister chromatids. The relationship between them is: two chromatids contained in the duplicated chromosome are held together at a region of DNA called the centromere.

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kap26 [50]
This implies that the gametophytes can easily lose water to, and absorb water from, the atmosphere. 
Moss is a flowerless, spore-producing pant. The main moss structure is the gametophyte, a moss's stem and leaves. A moss stem also the axis supports leaf-like structures that carry out photosynthesis, transforming sunlight into sugars the moss uses for food. 
5 0
3 years ago
Post-transcriptional regulation includes all of the following mechanisms EXCEPT:RNA interference - anti-mRNA sequences bind to m
Usimov [2.4K]

Answer:

D) presence of transcription activators or repressors

Explanation:

The reason why this is not post-transcriptional regulation is that activators actually start the process of transcription by binding to specific sites. while on contrary when repressor binds it halt the process.

For example, there is a protein called CAP which in the presence of cAMP bind with promoter region and enhances the activity of RNA polymerase . While in the absence of cAMP it can not bind to promoter hence the transcription stooped.

4 0
2 years ago
It is unnecessary for pregnant and lactating women to increase their fluid intakes
Greeley [361]
False
http://www.h4hinitiative.com/hydration-science/hydration-lab/hydration-pregnancy-and-breastfeeding/c...


5 0
2 years ago
Read 2 more answers
what function does the limb serve in each animal? How are the limb bones of the four animals similar? Based on these similaritie
e-lub [12.9K]
The function of the limb is to help them get around and move. They might be similar in the way they’re structured? I don’t have a picture so I can’t tell. And you can assume that at one point these four animals all shared a common ancestor. Hope I helped!
3 0
3 years ago
If the rice already had the genes that could make vitamin A, why did scientists use genes from other organisms?
meriva

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.

7 0
3 years ago
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