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Dafna1 [17]
3 years ago
6

Explain the difference between chromosomes, chromatids and chromatin. (3-4 sentences)

Biology
1 answer:
Y_Kistochka [10]3 years ago
5 0

Answer:

A Chromosome is a long thread-like structure that are known to form the DNA molecule, and chromatid is one half of two identical copy of DNA. The two chromatids are joined together to form the chromosome. And chromatids are made up of a substance called as chromatin.

Chromosomes and chromatids are closely related to each other and both of them are made up of DNA molecules. Chromosomes carry the genetic material and chromatids form the DNA.


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a single stranded dna (oligonucleotides) can hybridize with (select one): select one: a. complementary dna b. complementary rna
garri49 [273]

A single stranded DNA  (oligonucleotides) can hybridize with (d) both complementary DNA and complementary RNA.

DNA is the Deoxyribonucleic Acid. It is the genetic material present in majority of organisms. The nitrogenous bases present in DNA are: Adenine, thymine, Guanine and Cytosine.  DNA is a double stranded structure hence it forms hydrogen bonds with a complementary strand. The complementary strand can be of a DNA or RNA.

RNA is the Ribonucleic Acid. It also is a genetic material present in very few organisms. RNA is less stable than the DNA and may be either single stranded or double stranded. The nitrogenous bases of RNA are: Adenine Uracil, Guanine and Cytosine.

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4 0
1 year ago
Genetically modified grass varieties that carry genes for disease and drought resistance are now available. They were produced b
Kryger [21]

Ans.

Genetically modified grasses are produced by using genetic engineering techniques, which contain genes for drought and disease resistance. Due to those genes, these grass varieties have higher chances to survive in stress condition and they spread with a fast and tremendous rate.

Most of the genetically modified grass varieties are still not approved by government, because 'these grass species may act as uncontrolled invasive species and cause harm to other useful plant species as they can spread fast and hard to wipe out due to resistance against stress conditions.'      


6 0
3 years ago
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Plant reproductive seeds are not enclosed nor found on cones or similar structures. These seeds are referred to as ___________.
Fittoniya [83]
The appropriate answer is e. gymnosperm. Gymnosperms have seeds that are not protected by an ovary or fruit. A popular example of a gymnosperm are conifers. Another characteristic of gymnosperms is that they do not have bright flowers. The Greek word for gymnosperm literally translates to naked fruit. The seeds of these plants are open to the air and as such they are directly pollinated by the wind.
8 0
4 years ago
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What is the purpose of a conclusion?
Ymorist [56]

Answer:

The function of your paper's conclusion is to restate the main argument. It reminds the reader of the strengths of your main argument(s) and reiterates the most important evidence supporting those argument(s).

Explanation:  step-by-step mark most brainliest pls

8 0
3 years ago
Match the scenario to the type of potential energy represented.
lord [1]

Explanation:

A battery sits in an iPod before the iPod is turned on. Chemical

Battery store chemical energy that is used to power an ipod. A battery is a typical non-rechargeable/rechargeable electrochemical cell. Here chemical reactions in the cell are used to produce electrical energy after the ipod is turned on

A man at a carnival lifts a hammer high over his head before swinging it down onto a pad.   Gravitational

Gravitational potential energy is in the hammer over the man's head. The hammer has a mass and it is subjected at that height to the force of gravity pulling all things to the center of the earth.

A positively charged particle is slowly moved away from a strong, negatively charged plate  Electric

This is an electric energy that sets up potential difference in a cell.

The string of a bow and arrow is pulled tight.   elastic

Elastic energy is in string and when released, it returns back to its original position without getting deformed in the process.

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4 0
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