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pishuonlain [190]
3 years ago
5

URGENTE!!!!! 3 — Um casal resolve ter um filho. Para que isso ocorra, o óvulo deve ser fecundado. Agora responda: Quantos cromos

somos tem o óvulo? Quantos cromossomos tem o espermatozóide? E quantos cromossomos tem o zigoto originário dessa fecundação?
History
1 answer:
mel-nik [20]3 years ago
3 0

Answer:

Os espermatozoides e os óvulos têm 23 número de cromossomos, enquanto o zigoto tem 46 número de cromossomos.

Explicação:

Os espermatozoides e os óvulos têm 23 cromossomos cada, enquanto o zigoto tem 46 cromossomos. É devido à fusão de espermatozoides e óvulos, ambos contribuem com seus cromossomos e o zigoto atinge o número 46 de cromossomos. Tanto nos espermatozóides quanto nos óvulos, ocorre a divisão celular meiose, na qual uma célula-mãe se divide em quatro células-filhas com metade do número de cromossomos, enquanto a mitose ocorre nas células do corpo.

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