Ammonoids are good as index fossils because of the following characteristics;
<span>1.
</span>Their abundance and vast distribution across most shallow
marine waters during the periods
<span>2.
</span>They have easily recognizable
features, such as shells and the highly crenulated and complex suture, that are well preserved in rocks
<span>3.
</span>Their rapid
evolution that can assist determine changes and variations in the then environment
Answer:
They create models of genes, proteins, and traits. In sexual reproduction, each parent randomly passes on one of its two copies of each gene to its offspring. ... Each offspring can inherit a different combination of gene versions, so siblings can have different traits from each other and from their parents.
Explanation:
1. scales & cone parts
2. Pistil and stamen & flower parts
3. egg & female cell
4. mitosis & cell division
5. hyphae & fungi parts
6. vegetative production & leaf and spore case
7. Sperm & make cell
8.