Word Bank: phenotype parent hereditary DNA Alleles pairs three genotype Genes are the parts of DNA that contain the information passed down from generation to generation. are the possible variations of the gene that controls a specific trait and always come in . Offspring receive one allele from each . The of the offspring is the combination of inherited alleles that control a certain trait. The physical appearance of a trait is the offspring’s

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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.

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.

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