The per capita ecological footprint is the total ecological footprint for a given country or area is false and is therefore denoted as option B.
<h3>What is Ecological footprint?</h3>
This is referred to as the amount of land which is required to ensure that there is adequate use and sustainability of the resources which are present in area at a given period of time.
The per capita ecological footprint is the average ecological footprint for a given country or area and not the total ecological footprint which is therefore the reason why false was chosen as the most appropriate choice.
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If mutation destroys the function of the Cas9 gene then the bacteria will not be able to target a specific bacteriophage for destruction upon infection for the second time.
<h3>What is the Cas9 gene?</h3>
- Cas9 is a 160 kilodalton protein that plays a vital role in the immunological defense of certain bacteria against DNA viruses and plasmids and is heavily utilized in genetic engineering applications.
- Its main function is to cut DNA and thereby alter a cell's genome.
- Although Cas9 is an endonuclease and is evolved as a mechanism of immunity against viruses, they are not considered restriction enzymes.
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Out of the following choices given, the true statement about diffusion is molecules move from areas of high concentration to areas of low concentration. The correct answer will be D.
Answer:
Tetraploid
Explanation:
Ploidy:
Ploidy is a biological term used for the presence of number of chromosome sets in a cell. Cells can be haploid (gametes), diploid (two chromosomal sets) and polyploid (more than two chromosomal sets).
Polyploidy:
A condition that entails the possession of more than two sets of chromosomes in the cell. Normal cells are diploid (2n) i.e they contain two sets of chromosomes, one from each parents. Polyploid individuals contain three (triploid, 3n), four (tetraploid, 4n), five (pentaploid, 5n) number of chromosomes and so on.
Under normal disjunction of chromosomes, a tetraploid cell will produce two diploid daughter cells each with two sets of chromosomes.
However, in the case of non-disjunction of all chromosomes in a tetraploid individual, two tetraploid daughter cells will be produced at the end of meiosis 1.
Non-disjunction of all chromosomes means that one daughter cell has received all 4 sets of chromosomes while the other is null i.e. contains zero chromosomal sets.
Since the food worker just cut raw chicken, he'd need to wash his hands with soap and warm water before preparing the salads. If he didn't wash his hands, he could give the costumer/consumer a disease called salmonella.That is a<span>n infection with salmonella bacteria, which is mainly caused by contaminated food or water.
Hope this helps!
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