a. 2 > The 23rd pair, the sex chromosomes, differ between males and females (females have two copies of the X chromosome, while males have one X and one Y chromosome). In humans, the sex chromosomes comprise one pair of the total of 23 pairs of chromosomes. The other 22 pairs of chromosomes are called autosomes. <em>Chromosomes are thread-like molecules that carry hereditary information (they are made of protein and one molecule of DNA, which contains an organism's genetic instructions).</em>
Cells can only come from pre-existing cells
CELL THEORY
1. cells are the basic units of structure
2. all living organisms contain one or more cells
3. all cells come from preexisting cells
Hope I helped
The answer is D. Contain chlorophyll
MRNA is transcribed from DNA and carries information needed for protein synthesis. During the translation phase of protein synthesis, the tRNA carry specific amino acids the the ribosome, and rRNA plays a role in the synthesis of the ribosome which is the site of translation phase of protein synthesis.
First Gap: The cell is growing in size and is beginning protein synthesis. D<span>uplication is happening.
Synthesis: </span><span>DNA is duplicated so that each chromosome contains two identical copies.
Second Gap: Continues to grow in size and making the amount of protein it needs, also confirming the DNA has no errors in it.
(Also after this the GO phase starts to happen)
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