jamarstand
16.02.2021 •
Biology
A rock is worn and cracked from sediments carried by the wind,
animal actions, acid rain, and ice wedging. Which of the following is
an example of chemical weathering?
A. sediments carried by the wind
B. animal actions
C. acid rain
D. ice wedging
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Ответ:
Ответ:
Ответ:
El sexo del niño es determinado por el cromosoma sexual del espermatozoide masculino que fertiliza el óvulo.
Explanation:
Si el espermatozoide contiene un cromosoma Y, el sexo del niño será varón, mientras que si el este gameto contiene un cromosoma X entonces el sexo será femenino. Por contraposición, el óvulo siempre aporta al cigoto o célula huevo un cromosoma sexual X. De este modo, la determinación sexual del individuo se da mediante un sistema genético donde la combinación cromosómica XX da lugar al desarrollo de una mujer, mientras que la combinación XY da lugar al desarrollo de un varón.