Soft-shell crab is a prized dish in many ocean-side resorts. why are the crabs' shells soft? the crab has just molted and the new exoskeleton has not yet hardened. these species have evolved a light and soft exoskeleton so that they can float in the water column. these species have evolved a light and soft exoskeleton so that gases can diffuse directly between body of the crab and the surrounding water. these species of crabs live under rocks and therefore have lost the hard exoskeleton over evolutionary time.

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.

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ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).

answer; benefit; harmed;