Un átomo neutro X, posee 21 electrones y 30 neutrones. ¿Cuál es el número másico del átomo X?

Which type of stimulus do mechanoreceptors detect? sound pain heat light

Which of the following terms best matches this definition: the process where humans choose the traits that will be present in the next generation through breeding. question 4 options: genetic determinism artificial selection acquired selection natural selection

Across of blue x blue (both heterozygous) would result in