Answer:
Yes, there is no convincing scientific evidence that thimerosal causes harm by the low doses of thimerosal in vaccines, except for minor reactions like redness and swelling at the injection site
Explanation:
Thimerosal has been used safely as a vaccine additive, added to some vaccines to prevent germs like bacteria and fungi from growing in them dated since early 1930s. Though, Thimerosal contains mercury but the type of mercury doesn’t stays in the body, and is unlikely to make human fall sick.
Most people doesn't have any allergic reaction to it except for redness and swelling at the injection site as early mentioned and this is considered irrelevant when compared to effect of vaccine when contaminated by germ which could cause serious illness or death.
Answer:
<em> The carrying capacity is determined only by the density-dependent factors.</em>
Explanation:
The maximum number of organisms of a particular species that an environment can hold is known as the carrying capacity of that environment. The carrying capacity depends on density-dependent factors as well as density- independent factors like weather, sunlight etc.
Beyond the carrying capacity, the organisms will begin to fight with each other for limited resources. The environment will become unstable as the resources will be scarce and individuals will be more.
Answer:
A. Dominant alleles often encode functional products, whereas recessive alleles often do not encode functional products
Explanation:
One gene can have it's variant forms called allele but in one individual only two allele form of a gene can be present. These two allele form can be the same(homozygous) or different(heterozygous). A dominant allele often encode a function protein of product while recessive allele often code for non- functional product.
Therefore when the dominant allele is present in the chromosome then function products are formed which can be seen in the phenotype and even a single dominant allele produce the functional product like in heterozygous condition so phenotype in heterozygous and homozygous dominant condition appears same. So the correct answer is A.
