(a)      A child born or conceived during a marriage is presumed to be the legitimate child of both spouses. Except as provided in § 1-207, a child born at any time after his parents have participated in a marriage ceremony with each other, even if the marriage is invalid, is presumed to be the legitimate child of both parents.

      (b)      A child conceived by artificial insemination of a married woman with the consent of her husband is the legitimate child of both of them for all purposes. Consent of the husband is presumed.