3.¿Cuál es la respuesta correcta?: a El material genético rodeado por una membrana.
b. Las células procariotas poseen núcleo con membrana.
c. Las células eucariotas poseen núcleo con membrana.
d. Todas las células que forman los seres vivos son eucariotas.​

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .