Neither parent of rabbits has the gene that causes longer ears. identify one process that might cause the appearance of this new trait in the offspring.

In biology, evolution refers to the variation in the inherited traits of a population from generation to generation. These traits are the expression of genes, which are copied and transferred on to the offspring at the time of reproduction.  

However, mutations in these genes can generate altered or new traits, leading to heritable differences or genetic variations among the species. New traits can also come due to the transfer of genes amongst the populations, as in migration, or among the species, in horizontal gene transfer.  

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.