The correct answer is: B)of DNA between homologous chromosomes must happen before metaphase
Mitosis is a process of somatic cell division, whereby a single cell divides into two daughter cells that are genetically identical. There are five stages of mitosis:
1. Interphase- The cell grows and prepares for the division.DNA duplicates, two copies of chromosomes are formed
2. Prophase- duplicated chromosomes condense- become compacted and tightly wound. Mitotic spindle which organize the chromosomes is formed. Chromosomes attach to microtubules.
3. Metaphase-Chromosomes are lined up along the equator of the elongated cell (metaphase plate is formed).
4. Anaphase- the sister chromatids are moving to opposite ends of the elongated cell.
5. Telophase- chromatids are on the opposite ends and cell division is almost over.
The phase after these is cytokinesis where the cell's cytoplasm divides.
Answer: Cell A does more work than cell B.
Mitochondria is the energy producer organelle of the cell. It produces energy in the form of ATP molecules. It is a membrane bound organelle which is only present in eukaryotic cells not found in prokaryotic cells. Presence of more number of mitochondria in the cell indicates that the energy requirement of the cell is more. This energy is required for cellular metabolism. Therefore, cell with more mitochondria works more than the one with less mitochondria.
<span>What type of fertilization requires a great excess of egg and sperm gametes because most are wasted? external fertilization. </span>
The answer is taiga.
Taiga is a coniferous forest located in the northern polar subarctic climate zone. What is characteristic for taiga is that winters are very long and very cold. Summers are, on the other hand, short with low temperatures. Many trees in the forest are evergreen conifers with needle-like leaves. <span>Animals have adaptations to seasonal changes by changing their fur or feather color. <span /></span>
