Chromatids are only called as chromatids when they are sister chromatids, meaning that when chromosome have two double stranded DNA attached together, each of the double stranded DNA is a sister chromatid, and while the whole thing (the two sister chromatids that are attached together) is called a chromosome.
So after the DNA has been replicated, the chromosome consist of 2 sister chromatids, attached to each other at their centromere.
Overall, sister chromatid is one of the two double stranded DNA in a replicated chromosome, and chromosome is the whole "X" shape that we see. For example, in humans, after the S phase of interphase in the cell cycle, we have 46 chromosomes, with 92 chromatids, since each chromosome is an "X" shape, by having two sister chromatids.
Hope this helps!
Eugene is running and needs more energy. He drinks a sports drink with sugar, but that sugar needs to be converted to another form of chemical energy forhis leg muscles to be able to use it. The process that will convert the sugar to energy that his cells can use is cellular respiration
hope it helps
B. A decrease in crop diversity is an environmental concern. Weed killers will wipe out other strains of crop leaving only the engineered resistant type.
