According to the colonial hypothesis, choanoflagellates and modern animals have a common ancestry.
This view is supported by molecular data. Choanoflagellates are a group of colonial, unicellular eukaryotes that thrive in free-living settings and are regarded to be the closest living relatives of animals. Choanoflagellates are collared flagellates, and at the base of each flagellum, they have a collar made of interlaced microvilli that resembles a funnel. Both asexual and sexual reproduction are possible in chonoflagellates. One apical flagellum, an ovoid or spherical cell body that is 3–10 m in diameter, and a collar of 30–40 microvilli around it make up their distinctive cell shape.
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True an increase in birth rate will tend to cause the population
Answer:
The stomach has muscles to dizolve and produce energy up from the food
Explanation:
Answer:
c. Giraffes that stretch their necks more than other giraffes will have babies with longer necks.
Explanation:
Giraffes that stretch their necks will not have babies with longer necks. A trait only shows in next generation if it is genetically inherited i.e. the gametes carry the trait to the next generation.
When giraffes stretch their necks, they are modifying their actions in their life time which will have no effect on the gametes. Hence, this trait wont be passed to the next generation and babies will not have longer necks.