Question

Which statement shows why lethal genes can be maintained within a gene pool.

Question 8 options:

they can be passed on as recessive trait in a heterozygous individual


they are expressed before the individual reaches the age of reproduction


they are always dominant


they are only expressed in the female organism

Answer 1

Step-by-step explanation:

They can be passed on as a recessive trait in a heterozygous individual. Lethal genes are not always expressed in an individual, but can still be passed down from generation to generation in the form of a recessive trait in a heterozygous individual. This means that a person can carry the gene and pass it down to their offspring, even if they don't show any signs of the gene's expression. As long as the lethal gene is paired with another dominant gene, it can be passed on and remain in a gene pool.