Question

meiosis is a critical process which occurs during sexual reproduction that allows a species to retain certain characteristics. which argument best supports the claim that meiosis provides an advantage to sexually reproducing organisms?
a. meiosis prevents losing genetic information that distinguishes the species.
b. meiosis prevents mating with other species to produce fertile hybrids.
c. meiosis prevents developing new and advantageous characteristics.
d. meiosis prevents introducing genetic variety into the population

Explanation:

Meiosis is a crucial process in sexual reproduction. Let's analyze each option:

• Option A: Meiosis does not prevent losing genetic information that distinguishes the species. In fact, it can lead to genetic variation but also has mechanisms to maintain species - specific traits. However, this is not the best advantage.
• Option B: Meiosis is within a species and does not prevent mating with other species. Hybrid sterility (if hybrids are formed) is due to other genetic incompatibilities rather than meiosis.
• Option C: Meiosis can lead to new combinations of genes. While some of these combinations may be less advantageous, the overall advantage is not about preventing less - advantageous characteristics.
• Option D: Meiosis involves crossing - over (exchange of genetic material between homologous chromosomes) and independent assortment of chromosomes. These processes introduce genetic variety into the population. Genetic variety is essential for the adaptation and evolution of sexually - reproducing organisms.

Answer:

D. Meiosis provides introducing genetic variety into the population