What is the best description of the word 'recessive' as it is used in biology? A. Having two identical versions of an allele in a cell.
B. An allele that is always expressed, even if there is only one copy in a cell.
C. An allele that induces reclusive behavior in an organism.
D. An allele that is only expressed if two versions of it are present in a cell.
boil

An allele that is only expressed if two versions of it are present in a cell.

boil

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.