All three are bad for the environment because all three types release CO2 into the air and have throughout their constant usage helped with creating the greenhouse effect that traps heat and causes global warming. That's why clean energy is a necessity and people are developing harnessing wind and solar power.
Answer:
The correct answer will be option-formation of heterochromatin
Explanation:
Methylation of DNA is the epigenetic mechanism which controls the expression of a gene by adding a methyl group to the cytosine bases in eukaryotic DNA.
The methylation of DNA converts the cytosine residues to the 5-methylcytosine catalysed by DNA methyltransferase enzyme. This results in the silencing of the gene and transcription get switched off.
Studies have shown that DNA methylation is involved in the formation and maintenance of the heterochromatin structure which is the condensed form of the chromatin in which transcription is switched off.
Thus, the formation of heterochromatin is the correct answer.
Cells are limited in size because the outside also known as the plasma membrane must transport food and oxygen to the inside of the cell. This can be represented by what is known as the surface to volume ratio.
The inversion would suppress recombination.
In Drosophila, the mutations which are recessive are lethal or recessive sterile. Balancer chromosomes are used to hold the deleterious mutations in stable shares as well as to save you recombination with the aid of suppressing.
Chromosomal inversions prevent the recuperation of recombinant chromosomes in ways.
- the crossovers do now not shape within the location of inversion breakpoints, due to the fact synapsis is inhibited.
- unmarried crossovers' inner inversions result in aneuploid gametes that cannot give upward push to normal progeny.
Drosophila is a genus of flies, belonging to the own family Drosophilidae, whose participants are often referred to as "small fruit flies" or (much less regularly) pomace flies, vinegar flies, or wine flies, a connection with the feature of many species to linger around overripe or rotting fruit.
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it would be C because kingdom is animalia, phylum is chordata, class is mammalia and order is carnivora and humans and tigers are both carnivors
