Tay-sachs, which is a recessive lethal disease, results only when individuals possess two copies of the disease-causing allele. which of the following statements is true about this disease? a. heterozygous individuals may pass on their copy of the disease-causing allele to offspring.
b. heterozygous individuals only pass on the dominant copy of the allele to offspring.
c. heterozygous individuals are more fit than homozygous dominant individuals, so eventually, there will only be heterozygotes in the population.
d. all cases of this disease must be caused by new mutations.
e. none of the above.
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Tay-sachs, which is a recessive lethal disease, results only when individuals possess two copies of...
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