Working in the famous "fly room" at columbia university, you cross a homozygous recessive purple-eyed, vestigial-winged fruit fly (ppvv) with a heterozygous normal-eyed, normal-winged fly (ppvv). both genes are found on chromosome 2. you discover the following percentages of flies in the f1generation: 42 percent with normal eyes and normal wings; 46 percent with purple eyes and vestigial wings; 6 percent with normal eyes and vestigial wings; and 6 percent with purple eyes and normal wings. a) what is the expected outcome for a cross involving two linked genes? why do you think your results differed from the expected outcome? b) which of the offspring are recombinant types? c) determine the recombination frequency for this cross. d) based on your findings, how many map units apart are the genes for eye colour and wing type on chromosome 2?

answer: c. two haploid cells

explanation:

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

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