Define "gene drive".

Define "gene drive".

• A. A method for cloning organisms
• B. A genetic engineering technology that promotes allele inheritance
• C. Technique to suppress gene expression
• D. A form of horizontal gene transfer

Answer: (B)

A gene drive is a genetic engineering technology designed to promote the inheritance of a particular allele to increase its prevalence in a population. This mechanism works by ensuring that a modified gene is passed on to a larger proportion of offspring than would occur through traditional Mendelian inheritance. In simple terms, while typical inheritance might see one allele passed on 50% of the time, a gene drive can enhance this rate, sometimes approaching nearly 100%. This technology has significant implications for fields such as conservation biology, agriculture, and disease control, as it could allow for the rapid spreading of desired traits through wild populations, like making them resistant to certain diseases or pests. The method is typically realized through techniques such as CRISPR/Cas9, where specific DNA sequences can be edited and then made to preferentially replicate. The other options do not accurately capture the concept of a gene drive. For instance, while cloning organisms and suppressing gene expression are vital biotechnology techniques, they do not inherently focus on allele inheritance. Horizontal gene transfer refers to the movement of genetic material between organisms other than by descent and does not reflect the targeted approach of a gene drive aimed at modifying inheritance patterns in populations.

A gene drive is a genetic engineering technology designed to promote the inheritance of a particular allele to increase its prevalence in a population. This mechanism works by ensuring that a modified gene is passed on to a larger proportion of offspring than would occur through traditional Mendelian inheritance. In simple terms, while typical inheritance might see one allele passed on 50% of the time, a gene drive can enhance this rate, sometimes approaching nearly 100%.

This technology has significant implications for fields such as conservation biology, agriculture, and disease control, as it could allow for the rapid spreading of desired traits through wild populations, like making them resistant to certain diseases or pests. The method is typically realized through techniques such as CRISPR/Cas9, where specific DNA sequences can be edited and then made to preferentially replicate.

The other options do not accurately capture the concept of a gene drive. For instance, while cloning organisms and suppressing gene expression are vital biotechnology techniques, they do not inherently focus on allele inheritance. Horizontal gene transfer refers to the movement of genetic material between organisms other than by descent and does not reflect the targeted approach of a gene drive aimed at modifying inheritance patterns in populations.