Answer:
1. X + X
Explanation:
The sperm and the egg each carry half of the DNA for the zygote (which is one cell that eventually becomes a baby).
A normal human <u>male</u> has the sex chromosomes XY
A normal human <u>female</u> would have XX
If the Y chromosome is present, the result is a male.
If there either more or less than 2 sex-chromosomes, there is usually some sort of abnormality, like delayed development or the inability to mature and reproduce.
Answer: The electron transport chain is a group of proteins found in the inner membrane of the mitochondria of a eukaryotic cell. ... Using electrons, hydrogen ions, NADH, ADP, and oxygen, the electron transport chain is able to make energy in the form of ATP.
C because fish take many more years to fossilize due to being contained/living in water their bodies are harder to break down
Answer: B. They contain genetic information
Explanation: The role of nucleic acids is to store the genetic information (DNA) and to decode that information into proteins (RNA). DNA is also the form in which genetic information is passed from one generation to the next.