Answer:
Explanation:
Extinto significa q ya no existe q desapareció
Espero q te sirva mi respuesta
Answer:
1. X + X
Explanation:
The sperm and the egg each carry half of the DNA for the zygote (which is one cell that eventually becomes a baby).
A normal human <u>male</u> has the sex chromosomes XY
A normal human <u>female</u> would have XX
If the Y chromosome is present, the result is a male.
If there either more or less than 2 sex-chromosomes, there is usually some sort of abnormality, like delayed development or the inability to mature and reproduce.
Hmm I will try my best to help you