In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

Q: Las reacciones en las cuales no hay intermedios se describen como

A: Reactions in which there are no intermediates are described as
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Q: La envoltura de los retrovirus procede de la (el)

A: The retrovirus envelope comes from (the)
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Q: La proporción de varianza ambiental debida a las influencias que recibe una persona de su entorno familiar y que son compartidas por el resto de su familia

A:
The proportion of environmental variance due to the influences that a person receives from their family environment and that are shared by the rest of their family
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