Which of the following statements about the offspring of a cross between two carriers of a lethal recessive gene are true? Please select all that apply. Offspring genotypes follow a 2:1 ratio The genotypes of the offspring follow the same Mendelian patterns as for crosses not involving lethal genes Where the wild-type gene is dominant, all surviving offspring have the same phenotype 50% of live offspring display the heterozygous phenotype
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Offspring genotypes follow 2:1 ratio: This statement is true. When two carriers of a lethal recessive gene (heterozygous) are crossed, the offspring genotypes will be in a 1:2:1 ratio (homozygous dominant: heterozygous: homozygous recessive). However, since the Show more…
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