In foxes, silver-black coat colour is governed by a recessive allele b and red coat color by its dominant allele (B). Determine the genotypic and phenotypic ratios expected from the following matings: a. Pure red x carrier red b. Carrier red x silver black c. Pure red x silver-black

answer; both surfaces of the membrane are nonpermeable

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.