Answer:
<h2>The answer is option D- Selective breeding.</h2>
Answer:
The answer is b. Both of them are characterized by selective permeability.
Explanation:
- Option a. states that both, the nuclear and the cell membrane have two layers. This is only true for the nuclear membrane that consists of two lipid bilayers whereas the plasma membrane only contains one layer.
- c. Only the nuclear membrane has nuclear pores that connect the two bilayers. The pores act as protein channels or passages that allow transport of materials. The cell membrane does contain channel proteins or transmembrane proteins but not protein channels.
- d. The nuclear membrane separates nuclear contents from the cytoplasm whereas the cell membrane separates cellular contents from the extracellular environment.
The part of a DNA molecule responsible for the direct coding of specific traits in an organism is the nucleotide sequence.
<h3>How is a DNA molecule structured?</h3>
The DNA molecule is the biological molecule that stores genetic information in living organisms.
The DNA molecule is made up of three major components in its structure:
- Five carbon sugar
- Nucleotide bases
- Phosphate group
The five carbon sugar is deoxyribose while the nucleotide bases are four in number as follows:
- Adenine
- Guanine
- Thymine
- Cytosine
These nucleotides are responsible for the direct coding of specific traits in an organism.
Learn more about DNA at: brainly.com/question/13541376
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Habitat loss..The most harmful threat to biodiversity is the D. Habitat loss.
It's not easy to live in a place that you no longer have any means of living. If ones organism loss his habitat, chances are they will extinct because of the absence of their basic needs.
