A heterozygous organism is best described as which of these? Question options:

dominant

genotype

hybrid

true-breeding

The correct answer is Hybrid
Explanation : A heterozygous (Aa) individual is produced by a cross of two different true-breeding (AA and aa) individuals. Thus the heterozygous individual is a hybrid.

Hybrid

Explanation:

An HYBRID is a product of crossing two purebred organisms for a particular trait. In more genetic terms, hybrid contains two different alleles in its genotype; one from each different parent. For example, crossing a horse and a donkey will result in a mule.

Based on the above explanation of a hybrid organism, one would realize that in terms of genotype, an hybrid is usually heterozygous for the involved gene. That is, the genotype will contain one allele from each parent e.g. Aa or Dd. For instance, when crossing two purebred organisms (red, RR and white, rr) for color in four o'clock plants, the resulting organisms are heterozygous pink (Rr) and can be said to be a HYBRID.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

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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.