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dezoksy [38]
3 years ago
9

PLEASE HELP!!!!!!!!!!!!

Biology
2 answers:
Marat540 [252]3 years ago
4 0

it's the structure of the nucleotides

the basic building unit of nucleic acid

dezoksy [38]3 years ago
3 0

Answer:

This is a nucleic acid structure. {Nucleotides} DNA/RNA

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Hershey and Chase used radioactive isotopes to label different parts of the phage. They grew one batch of phage in the presence
AlekseyPX

The sulphur would lable the capsule and the phosphorous the nucleic acid.

<h3><u>Explanation</u>:</h3>

Hershey and Chase experiment included growing of the pages in two batches, one in presence of 35S and other in presence of 32P. They then infected bacterial cells with these phages, cleaned them and then centrifuge the cells to isolate the marked elements in bacterial cells.

This was done to isolate which part of the phage is actually infective. Sulphur being a part of the proteins will mark the capsule whereas DNA having the phosphate bridges will be marked by 32P.

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3 years ago
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MakcuM [25]

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8 0
3 years ago
Explain how the lack of genetic diversity found in populations of endangered species might hinder their recovery
Lelu [443]

Hi

The term lack of genetic diversity for a particular population refers to the fact that there are less number of alleles and less range of phenotypes and traits like (height, skin, color, ability to cope disease, ability to change metabolism as per requirement etc).

If we talk about endangered species, they are the specie which are prone to be extinct in near future because their population is very less in number. There can be multiple reason of becoming endangered for a population such as over hunting etc.

So when we say that an endangered population is genetically less diverse, it means that there are further difficulties that hinder their recovery.

For example: If a calamity stucks, all organisms that are already low in number and also genetically less diverse, so they cannot cope with calamity and get extinct. However, if this population is genetically more diverse, some organisms may survive some may die, and those which survive can recover the population. That is why it becomes more difficult to recover an endangered specie if it is genetically less diverse. The more the genetic diversity, better it is for specie.

Hope it help!

6 0
3 years ago
Some islands are formed by volcanic eruptions, and the islands provide habitats for many organisms. What is another way volcanic
kicyunya [14]

Answer:

Volcanic eruptions help provide fertile soils (Option A)

Explanation:

There have been numerous confirmation of the existence of fertile lands around regions known to have experienced  volcanic activities. The regions around Mount Vesuvius is not an exception even though volcanic activities around the region are over thousands of years ago.

This is because, when Volcano occurred in such regions, it deposited volcanic materials rich in minerals. The materials are then weathered or broken down by the action of water or erosion to release nutrients into the soil.

7 0
3 years ago
If a heterozygous male with the genotype Ww is mated with a homozygous recessive female of genotype ww, there is a chance that o
kotegsom [21]

Answer:

The correct answer is option B: "50%".

Explanation:

The classical Mendel's Law of Segregation states that each individual has two alleles, one that is passed from each parent. In this example the W gene has a W dominant allele and one w recessive allele. If a Ww heterozygous male is mated with a ww homozygous recessive female there is a 50% chance that the offspring will be heterozygous. This result considering that Gregor Mendel's rules dictate that the offspring's genotype of the aforementioned crossing will be 50% Ww and 50% ww.

3 0
4 years ago
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