7-O gene que condiciona pêlos curtos em cobaias é dominante em relação ao gene que determina pêlos longos. Do cruzamento entre cobaias heterøzigøtas nasceram 880 cobaias, das quais 720 tinham pêlos curtos. pergunta-se:1) qual o número esperado de heterozigotos entre as cobaias de pêlos curtos?
2) quantas eram de pêlos longos?
3) E de total, quantas eram hømøzigøtas?
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For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

An unsaturated hydrocarbon is a hydrogen-carbon compound with a. a network solid structure b. single bonds c. single bonds in a branched-chain structure d. double or triple bonds

Choose the correct statement about licensed veterinarians in the united states. a. they must be certified by the avma. b. they can treat all nonhuman animals. c. they can can treat only animals specified on the license. d. they must choose a specialty.