The wild-type eye color in the fruit fly drosophila melanogaster is dark red, as a result of a mixture of bright red and brown pigments. "enzyme a" is encoded by the "a" gene, and is required to synthesize the bright red pigment. a lack of red pigment results in somewhat brown eye color. you cross two fruit flies who are heterozygous for a recessive mutation that completely inactivates the "a" gene. what proportion of their offspring will have a recessive eye color phenotype?

it is a

explanation:

there is no

explanation:

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

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.