Lethal alleles cause the death of an organism prenatal or after the birth. Lethal alleles are usually a consequence of a mutation and they can be recessive, dominant or conditional. Since the lethal dominant alleles are harmful whether they are carried in homozygous (e.g.AA) or heterozygous (e.g.Aa) form, a strong selection against them is present and thus these alleles are much more rare.
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i think rhe answer should be c but im not sure
the mass of the products in a reaction is always <span>the total </span><span>mass of the reactants</span>
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no, just like any other animal that is pregnant it slows down and the body develops more
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