Answer:
Phylogenetics
Explanation:
An evolutionary tree can also be called a phylogenetic tree, or a just a phylogeny, and phylogenetics is the study of determining evolutionary relationships, or patterns of descent of organisms.
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Answer:6CO2 + 6H2O + Energy
Explanation: DID IT!
X=2
Do you want a reason why I got what I did?
Cells at the completion of meiosis compare with cells that are in prophase of meiosis I is (A) The cells have half the number of chromosomes and half the amount of DNA.
The correct option is (A).
- The cells produced at the end of meosis cell division have half the number of chromosomes (termed as Haploid), so they will have half the number of chromosomes but same DNA as that of the parent cell as DNA divides and makes a copy of the parent cell DNA.
- Meiosis is a form of cell division of germ cells that creates gametes such as sperm or egg cells in sexually reproducing animals. It consists of two rounds of division that result in four cells with just one copy of each chromosome (haploid). Prior to division, genetic material from the paternal and maternal copies of each chromosome is crossed across, resulting in novel code combinations on each chromosome.
- During fertilisation, the haploid cells generated by meiosis from a male and female will unite to form a zygote, a cell with two copies of each chromosome.
To learn more about Meiosis.
brainly.com/question/11622266
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Answer:
B. The cell's DNA has been damaged somehow
Explanation:
Cell division is a must for every living cell. Before a cell can divide, its genetic material (DNA) needs to be duplicated. However, all conditions necessary for the DNA replication and actual division (mitosis or meiosis) must be favorable. The set of genes that makes sure of this are called CHECKPOINT genes. Checkpoint is an internal controlled mechanism employed by the cell to ensure that its division occurs without errors. Any errors during this process can cause the cell division process to be halted.
Checkpoints occur after certain stages of the cell cycle and each is dependent on whether certain demands are met by the cell. For example, the G1 checkpoint will not allow S-phase (Synthesis of DNA) to take place if it is observed that the DNA of that cell has been damaged in any way. The cell using checkpoints prevent that cell from dividing and multiplying in order not to magnify the problem.
