D. Males that only survive to produce sperm
Answer:
This question is incomplete
Explanation:
There is no way to predict what the phenotypic ratio will be if we are not given the genotypes/phenotypes of the previous generation. However the concepts of genetic crossings can be explained.
In genetics, there is often genes controlling a certain characteristic in an organism, and when this organism mates, it passes on its genetic information to its offspring. This information can be mapped and we can predict what the future generation will look like given the genotypes and phenotypes of the generation before.
When the continents separated, organisms were forced to be placed in different locations with different environmental conditions. In order to survive in their new environment, over time, various flora and fauna developed various body mechanisms to cope up. This brought up the speciation of flora and fauna.
Answer:
B. a nucleus
Explanation:
cell walls and chloroplast are both found in plant cells, not in animal cells
The particles that make up matter are the atoms.
Atoms do not change during a chemical change. They do not either during a physical change.
During a chemical change molecules change but not the atoms. The atoms separate from the original molecules and form new molecules. Then moleculas change but atoms remain being the same before and after the chemical change.
For example, atoms of oxygen in molecules of O2 combine with atoms of hydrogen in molecules of H2 and they form the molecules of water H2O.
The atoms of O in O2 are the same atoms of O in H2O and the atoms of H in H2 are the same atoms of H in H2O. The molecules changed, from H2 and O2 to H2O, but the atoms are the same.
