Answer:pls add a picture so we can see the organisms
Explanation:
Answer:
The suitable words for fill in the blanks will be -
- embryo
- flippers
- disappear
- off
- genetic
Explanation:
Examining a dolphin embryo highlights its evolutionary history. Early in dolphin development, both fore and hind limb buds form. While the forelimb buds continue to develop into flippers, the hind limb buds disappear. The genes that are normally active in the hind limb buds of four-limbed animals are turned off. A genetic change leading to the silencing of a trait during development may have been an important milestone in cetacean evolution.
Porifera comb jellies and corals
R-selected species often experience EXPONENTIAL growth in population, giving a J-SHAPED curve on a graph.
R-selected species are those that have high growth rate. These species may produce many offspring but not all will survive into adulthood.
