How does the bicoid protein provide positional information along the anterior-posterior axis of the fly embryo? it is present at high concentration at the end and low concentration at the end.

It is present at high concentration at the anterior end and low concentration at the posterior end.

Gene bicoid (and its product-bicoid protein) organizes anterior development in Drosophila.

During oogenesis, bicoid mRNA is actively localized to the anterior of the Drosophila egg.

Bicoid genes together with Hunchback genes are the maternal effect genes and that are most important for patterning of anterior parts of the Drosophila embryo such as head and thorax.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.