seorang perempuan dengan genitipe XhX pembawa sifat hemofili menikah dengan seorang laki laki hemofili dengan genotipe XhY. tentukan jumlah anak yang hidup dan anak yang mati? dan cara penghitungannya.

<p>Jawaban yang tepat adalah<strong><u> </u></strong>3 orang dan meninggal 1 orang karena bersifat letal yaitu perempuan hemofilia.</p><p>&nbsp;</p><p>Hemofilia merupakan salah satu penyakit kelainan genetik yang disebabkan oleh gen resesif h yang terpaut kromosom X. Hemofilia termasuk ke dalam gen letal. Gen letal adalah gen yang dapat menyebabkan letal atau kematian jika dalam kondisi homozigot. Berdasarkan soal dapat diketahui seorang perempuan dengan genitipe X^hX pembawa sifat hemofili menikah dengan seorang laki laki hemofili dengan genotipe X^hY. menghasilkan presentase anak yang berpengelihatan normal sebagai berikut:</p><p>P1 : ♂ &nbsp; &nbsp;X^hY &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&gt;&lt;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;♀ X^hX</p><p>G : &nbsp; &nbsp; &nbsp; &nbsp; X^h, Y &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; X^h, &nbsp;X</p><p>&nbsp;</p><p>F1 :&nbsp;</p><p><strong>♂ / ♀ &nbsp;</strong> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<strong>X^h</strong>^{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}<strong>Y</strong></p><p>&nbsp;</p><p><strong>X^h</strong>^{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;}X^hX^{h &nbsp; &nbsp; &nbsp; &nbsp;} &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;X^{h &nbsp;}Y</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (perempuan hemofilia/ letal) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; (laki-laki hemofilia)</p><p>&nbsp;</p><p><strong>X^{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;}</strong>X^hX^{&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;} XY</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;(perempuan normal carrier) &nbsp; &nbsp; &nbsp; &nbsp;(laki-laki normal)</p><p>&nbsp;</p><p>Rasio fenotip F1 : &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Normal &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Hemofilia &nbsp; &nbsp;: &nbsp; &nbsp; letal</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;: &nbsp; &nbsp; &nbsp; &nbsp; 1</p><p><strong><u>Jadi jumlah anak yang hidup adalah 3 orang dan meninggal 1 orang karena bersifat letal yaitu perempuan hemofilia.</u></strong></p>