Genetic variation can<span> be </span>caused<span> by </span>mutation<span> (which </span>can<span> create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).</span>
Answer:
DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine)
Explanation:
The proteins are biomolecules which can act as hormones and enzyme catalysts which can help in catalyzing the chemical reactions. They help in the transport of the molecules and cell membrane trafficking. The proteins are antibodies which can bind to antigens and the foreign materials. The genetic information is carried by the genes in the DNA, and not proteins.
Thus, the correct answer is option 'They contain genetic information.
Answer:
Purple, spherical-shaped organisms arranged in chain like formations.
Explanation:
Bacteria are the microscopic organisms and included in the prokaryotes as they do not have nucleus. Two main types of bacteria are gram positive bacteria and gram negative bacteria.
The gram positive bacteria has thick cell wall peptidoglycan cell layer and can uptake the crystal voilet stain. These bacteria seems purple under the microscope due to the uptake of stain. The bacteria Streptococcus pyogenes are spherical in shape and occurs in the cluster of chain.
Thus, the correct answer is option (d).
