Answer:
Cell differentiation is how generic embryonic cells become specialized cells.
Explanation:
This occurs through a process called gene expression. Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions
The correct answer is option D, All of the above
Some of the common characteristics of an index fossil are -
a) These are plants and animals preserved in the earth which are characteristics of a particular span of geologic time or environment
b) These must be different or easily recognizable
c) Must be abundant
d) Must have a wide geographic distribution
e) Must have a short range through time.
Reef-building corals were
confined to relatively shallow depths because
many of these corals have microscopic algae
called zooxanthellae living inside their soft tissues.
These algae
are often important for the corals’ nutrition and
growth, but require sunlight for photosynthesis. There is no sunlight deep in the water.
If they both have Rr. The possibilities will be RR, Rr, Rr, rr. They have a 25% chance of inheriting the recessive trait instead of their dominant trait. That means that these traits are hidden and not expressed in the previous generation.
Answer:
there was no world war eleven