Immersive Reader
In genetic engineering
A
scientists add or change the genes on a chromosome.
B
natural selection is used to determine which traits to keep or eliminate.
C
dominant and recessive genes are mixed together randomly.
D
mitosis divides a cell into two equal parts.
Immersive Reader
In genetic engineering, option A is correct. Scientists manipulate the genes on a chromosome by either adding new genes or modifying existing genes. This process is done in a controlled laboratory setting.
Option B is incorrect. Natural selection is a process that occurs in nature, where traits that provide an advantage for survival and reproduction are more likely to be passed on to future generations. Genetic engineering is a deliberate human intervention that bypasses natural selection.
Option C is incorrect. Dominant and recessive genes do not blend or mix together randomly. Instead, they follow specific inheritance patterns, where dominant genes are expressed over recessive genes in certain circumstances.
Option D is incorrect. Mitosis is a cellular process where a cell divides into two identical daughter cells. It is not directly related to genetic engineering, which focuses on manipulating genes and their expression.