Greater genetic diversity, compared to asexual reproduction.
If you think about it, this makes sense because in asexual reproduction, an organism reproduces all by itself, and uses its own genome as the blueprint for its' offspring. However with sexual reproduction, two organisms come together, each contributing half the required chromosomes, and the offspring gets 1/2 it's genes from the mother and 1/2 it's genes from the father. Sexual reproduction allows for greater diversity because it doesn't just rely on mutations to add new diversity to the genepool.
The answer is <span>elastic artery
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<span>If some of the people chose to drink the water from the supplying line broken without boiling, they are in risk to get ill due to the presence of bacteria. Boiling water is a safe measure to kill most bacteria and should be used to avoid diseases caused by bacteria present in contaminated water. </span>
The question is incomplete. The complete question is:
Question: Innate immunity:
a) is based on recognition of antigens that are specific to a pathogen.
b) is the first and most general, mechanism of protection against pathogens
c) is found only in vertebrates
d) depends on an infected animal's previous exposure to a pathogen
Answer:
b) is the first and most general, mechanism of protection against pathogens
Explanation:
Innate immunity is the nonspecific immune response that provides immediate and the most general protection against all types of pathogens, parasites, toxins and cancer cells. Innate immune responses serve to prevent the pathogens from entering the body. The components of innate immunity also rapidly destroy those pathogens that have entered the body.
Some of the components of innate immunity are the first line of defense such as the physical and chemical barriers of the skin and mucous membranes. The components of the second line of defense such as natural killer cells, phagocytes and inflammatory response are also involved in innate immune responses.
For example, cuticle or skin serves as a physical barrier to pathogens that come in contact with an animal’s body. Phagocytosis kills the bacteria that invade the body.
