Both parents are carriers of the allele for Albinism, or lack of the pigment melanin in skin or eyes. The equal probability of having male or female offspring with Albinism is 1 afflicted out of every 4 children. This suggests the condition is

the condition is recessive, since the probability of appearing is 1/4.

Explanation:

Based on the information above,most of the children are dark skinned showing the dark skinned pigmentation being more dominant,thus the allele for albinism is recessive.

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.