Answer:
Larva with two anterior region
Explanation:
The maternal effect genes are involved in the development of anterior-posterior axis in Drosophila. There are 50 maternal effect genes but only four genes of these are involved in maintaining gradient along the axis. These are Hunchback, Bicoid, Caudal and Nanos.
The Hunchback and Bicoid regulates the development of anterior axis in Drosophila. The Caudal and Nanos regulates the Posterior axis development in Drosophila.
The products of hunchback and bicoid mRNA are required for development of head and thorax. The proteins coded by nanos and caudal are required for abdominal segments. The embryo that lacks nanos do not develop posterior axis. The early embryo injected with Bicoid protein into the posterior region will develop two anterior region.
This answer is true as can be!
Answer:
A. The rates of birth and immigration were balanced by the rates of death and emigration.
Humans have 5 taste receptor cells.
sweet, salty, bitter, spicy, and umami
