<span>About 50%
Both the mother and father contribute about the same amount of genetic material to their offspring, but it's not quite 50/50. Taking humans as an example, both parents contribute the same amount of genetic material for 22 of the 23 chromosome pairs, but the 23rd pair that determines gender (the X and Y chromosomes) are of different size. So for female children, both parents contribute about the same amount, but for male children, the mother contributes a larger portion since the X chromosome is quite a bit larger than the Y chromosome from the father. Another area in which the contribution differs is the mitochondrial DNA which is contributed solely by the mother. For mammals, this is about 1% of the total genetic material.</span>
Answer:
arms and shoulders
Explanation:
at least with me, after I lift weights, I do this and I can feel the focus on my arms and shoulders. It hurts like a b though lol
The 3 metabolic activities of the kidneys related to urine production are Glomerular <span>Filtration, Reabsorption, and Secretion: These three steps of urine formation ensure that only waste </span>and excess water are removed from the body. <span>Furthermore, waste Ions and hydrogen Ions secreted from the blood complete the formation of urine. </span>
The answer is graded potential<span>. Its made of various action potentials that depolarise the neuron incrementaly, in short interspersed intervals that do not give time for the neurons to return to resting potential. Therefore, the actions potentials, of varying sizes, grade up in sum and when they cumulatively reach the threshold level, they invoke an impulse in the nerve</span>
