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omeli [17]
3 years ago
7

The two nucleotide chains of RNA twist into a double helix shape. true or false ​

Biology
2 answers:
pantera1 [17]3 years ago
8 0

Answer:

True

Explanation:

The ladder is twisted into a spiral shape called a double helix.

Sav [38]3 years ago
6 0

Answer:

False

Explanation:

In DNA, there are four possible nitrogen bases – adenine (A), guanine (G), cytosine (C), and thymine (T). In DNA, nucleotides combine to form two long chains that intertwine with each other, like a ladder that has twisted into a spiral.

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Doss [256]

a hybrid that is heterozygous with respect to a specified gene.


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3 years ago
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In the article you read, the number of cases of paralytic polio went from about 2,500 per year in the 1950s to complete eradicat
EleoNora [17]

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3 years ago
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12. A plant has a dominant phenotype but an unknown genotype. The proper experiment to determine its correct genotype would be a
jekas [21]

Answer:

the correct answers are as follows

12:

b. Testcross- an organism with dominant phenotype but unknown genotype is crossed with homozygous recessive organism for the same trait. Based on the results obtained, if all offsprings have the same phenotype, then the parent is homozygous, but when a 1:1 ratio is observed in the offsprings, then the parent is heterozygous.

13.

e. Watson and Crick- they both used the crystallographic images from Franklin, analyzed them to first elucidate the 3D structure of the DNA and propose it to the world.

14.

c. Intracellular and commonly found in the cytoplasm- the receptors of steroid hormones are generally present within the target cell either in the cytoplasm or nucleus, since they alter gene expression.

15

e. Certain prokaryotes/bacteria- this is a process that will enable disease-causing pathogens to communicate and cooperate with their group, by the release of autoinducers that increase their cell density.

5 0
3 years ago
What traits can make a cell special, why are cells specialized…<br><br> (Minimum 5 sentences)
saw5 [17]

Answer:

They are modified by shape, function, or size. They are made to have certain roles in different parts of our bodies. These cells group together to make/form tissues. Then these tissues make up organs that we obviously need. Different specialized cells include blood cells, nerve cells, and reproductive cells.

Explanation:

3 0
2 years ago
Most of the water absorbed by the plant enters through the
gavmur [86]
Through the roots which soak up the water from surrounding soil
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