One of the assumptions of a model that explains the evolution of anisogamy is shown in the figure below. Why does this function not result in the evolution of isogamy with larger gametes?
a. The number of large proto-eggs that can be produced is limited.
b. Small proto-eggs are more likely to fuse with large proto-eggs than large proto-eggs, even if both occur at the same proportion and move at the same speed.
c. Large proto-eggs are rare; so the chance of fertilization with common sperm-like proto-eggs is higher than fertilization with another large egg.
d. Zygotes that form from the fusion of two small proto-eggs are common but short lived.
e. A combination of A, C, and D.
E
You might also like to view...
High ____ concentrations in Lake Erie encouraged the growth of photosynthetic algae, which changed the
phytoplankton community.
a. sewage b. detergent c. coliform bacteria d. phosphorous e. dead fish
____________ are composed of bacterial mats and sediment layers
Fill in the blank(s) with correct word
Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. Which cellular organelle must be involved in this condition?
A) the endoplasmic reticulum B) the Golgi apparatus C) the lysosome D) mitochondrion
Which of these is NOT a location where you might find members of the phyla Chlorobi, Chloroflexi, or Cyanobacteria?
A. Deep ocean thermal vents B. "Blooms" on lakes C. Microbial mats D. Sulfide-rich mud on lake bottoms