בְּשִׁבְעִ֣ים נֶ֔פֶשׁ יָרְד֥וּ אֲבֹתֶ֖יךָ מִצְרָ֑יְמָה וְעַתָּ֗ה שָֽׂמְךָ֙ יְהֹוָ֣ה אֱלֹהֶ֔יךָ כְּכוֹכְבֵ֥י הַשָּׁמַ֖יִם לָרֹֽב׃
Your ancestors went down to Egypt seventy persons; and now the ETERNAL your God has made you as numerous as the stars of heaven.
(The above rendering comes from the RJPS translation—an adaptation of the NJPS translation.)
The number seventy appears to be approximate and typological here, given its mention elsewhere (Nahum Sarna, JPS Torah Commentary, at Exod 1:5).
According to Gen 46:7, Jacob brought with him his “daughters and his sons’ daughters,” although the list of seventy in Gen 46:8–27 mentions only one of each: Dinah and Serah. The fact that daughters-in-law were not counted in that reckoning of seventy is actually noted (v. 26). The actual number of persons was far more than seventy, if the inferable yet unnamed women are counted.
In any case, women are not excluded per se in the count. Hence there is no warrant for rendering in gendered terms.
As for the translation, the NJPS “ancestors…seventy persons in all” supplies the phrase “in all,” which somewhat misleadingly suggests an upper bound. The revised rendering omits that phrase.