The Flipper of a Whale and the Wing of a Bird

question 53

True/False

The flipper of a whale and the wing of a bird are homologous structures.

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Definitions:

Semen

The fluid consisting of sperm suspended in various glandular secretions that is ejaculated from the penis during orgasm.

Gonadotropin-Releasing Hormone

A hormone secreted by the hypothalamus that stimulates the anterior pituitary to release gonadotropins, influencing reproductive functions.

Anterior Pituitary

The front portion of the pituitary gland, which produces and releases hormones that regulate various bodily functions including growth, reproduction, and metabolism.

Corpus Luteum

The temporary endocrine tissue in the ovary that develops from the ruptured follicle after ovulation; secretes progesterone and estrogen.