What prevents multiple sperm from fertilizing an egg? A. The egg reacts to a sperm penetration by blocking other sperm.
B. Nothing prevents it, this happens frequently,
C. Only one sperm on average ever reaches the egg.
D. A toxin released by the sperm and the egg cell

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

a symbiotic relationship with the mitochondria

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

the circumference of the solar disc is 4375246 km, nearly.

explanation: