Los gatos gordos se pueden producir por dos genes independientes. El genotipo "oo" genera un gato gordo y estéril, llamado obeso; su alelo dominante "O" da lugar a crecimiento normal. El genotipo recesivo "aa" también produce un gato gordo y estéril llamado adiposo, mientras que su alelo dominante ocasiona crecimiento normal. ¿Qué proporciones fenotípicas de gatos gordos frente a normales podemos esperar en F1, siendo los padres de genotipo OoAa?

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

the answer is d.) homologous; have mammary glands