In peas, round seed shape (R) is dominant to wrinkled seed shape () and yellow seed color (Y) is dominant to green seed color (y) A pea plant which is homozygous round seed and has green seed color is crossed with a pea plant that is heterozygous round seed shape and heterozygous yellow seed ocolor. Directions: Follow the given steps in the discussion, do the cross using the Punnett square, then answer the given questions correctly. Step 1: Read and analyze the given problem. Step 2: RR or Rr YY or Yy Step 3: Parent's genotypes: RRyy x= RrYy Step 4: Possible gametes: Ry Ry Ry Ry x RY Ry rY ry Step 5: Fill up the Punnett square correctly. Step 6: Determine genotypic and phenotypic ratios. -Phenotypic ratio: Genotypic ratio: % RRYY % RIYY. % RRyy. % Rryy Of

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Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.