Answer:
The circled letters represent the genotypes of the two parents
The top 2 letters (A a) is the genotype of one of the parents
The 2 letters on the far left (AA) is the genotype of the other parent
Answer:
C
Explanation:
The genes contain codes that specify proteins, which produce traits.
The first animal fossils would be most like the main body bones. I hope that helped
Stromatolite fossils are the oldest known fossils<span>, that formed 3.5 billion years ago when the environments of Earth were too hostile to support life as we know it today. They </span><span>are layered mounds, columns, and sheet-like sedimentary rocks</span><span>
Stromatolite fossils indicate that </span>life must have arisen quite a bit earlier, perhaps 3.9 billion years ago.
