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What is an example of a positively selected gene?

To understand how Mendelian genetics help to explain evolution, we need to look closely at what happens to genes in populations that are undergoing natural selection. This is the domain of

SIDS is the number 1 leading cause of death for babies one month to one year of age.

Baby girls die of SIDS more than baby boys.

SIDS is caused by suffocation.

The term “Gastropoda” literally means _______________ foot.

Respiratory organs in the phylum Arthropoda includes gills, book lungs and tracheal tubes.

Phylum Platyhelminthes shows diploblastic germ layers.

The phylum Platyhelminthes includes tapeworms which are endoparasites of the small intestines of vertebrates.

Nematodes are limited to only a few habitats, specifically shallow, warm marine habitats.