N the fruit fly, Drosophila melanogaster, a spineless (no wing bristles) female fly is mated to a male that is claret (dark eyes) and hairless (no thoracic bristles). Phenotypically wild-type F1 female progeny were mated to fully homozygous (mutant) males, and the following progeny (1000 total) were observed. Phenotypes Number Observed spineless 441 wild 27 claret, spineless 31 claret 1 claret, hairless 430 hairless, claret, spineless 32 hairless 38 hairless, spineless 0 Which gene is in the middle?

Gene h is in the middle.

Explanation:

Phenotype: represented by

spineless: s

hairless: h

claret: c

wild type: +

s + +          (parental)               + c +           (DxO double crossover)

+ c h                                         s + h

s +   s +

+ c   + c

+ h   h +    so the one that differs in position is in the middle, and hence, the answer is gene h (hairless)

Hope that answers the question, have a great day!

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

the answer for this question would be d. glaciers