Mitosis
Prophase: Nuclear envelope dissapears, chromatin condenses, Centrioles appear, spindle fibers start to form, Sister chromatids appear
Metaphase: Chromosomes (sister chromatids) line up along the center of the cell
Anaphase: spindle fibers attach to centromeres
Telophase: centromeres split in half, sister chromatids split in half
Cytokinesis: cytoplasm replicates, the cell fully divides, and we have produce 2 diploid cells , or daughter cells
They are capable of dividing and renewing for Long periods of time They are unspecialized and they can give rise to speacialized cell types
Answer:
<u>Barbara must be suffering from tension headache.</u>
Explanation:
<u>Tension headaches </u>are caused due to stress, here in this case Barbara is stressed because of excess workload and low productivity. Tension headaches are a type of primary headaches and its intensity increases gradually. the pain can travel from head to neck.
(Primary headaches: These headaches are not caused as a result of any other medical problem.)
Telomeres are found at the end of chromosomes to protect
genes from reduction during replication
of chromosomes, especially during meiosis
or mitosis. They are composed of repetitive sequences
that do not code for protein. Telomeres become
reducted <span>especially due</span> to the inability of the lagging strand to be completely replicated to the end of the chromosome. However, while
the telomeres become shorted with every
replication, the telomeres are usually slightly elongated by telomerase reverse
transcriptase.
Answer:
C. A, T and G.
Explanation:
Three stop codons of RNA are UAG, UAA, and UGA. Presence of any of these three stop codons in RNA stops the process of protein synthesis. The nitrogenous bases present in these stop codons are U, A and G. However, the corresponding bases that could be arranged into stop codon would be T, A and G. This is due to the fact that DNA does not have Uracil base, rather have thymine.