No, because two creatures with similar niches can evolve similar traits and appearances despite not having a common ancestor.
Anaphase I begins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. Notice that in anaphase I the sister chromatids remain attached at their centromeres and move together toward the poles.
Answer:
True.
When shopping for fruit trees for the yard we should select varieties that mature before the hot summer temperatures arrive to avoid sunburning fruit.
Explanation:
- The fruit trees on your yard should be carefully selected, always seek for the fruit that matures before the summer season.
- The summer season hot weather is most likely to burn down the tree and may also kill it before it can grow.
- Once it gets matured then there is no drastic effect of sun so, we must select tree in such a manner that it must get matured before hot summer.
Answer:
a. histones. is the correct answer.
Explanation:
In a nucleosome, the DNA is wrapped around eight histones proteins to create strong loops termed nucleosome.
A nucleosome is the structural subunit of the chromatin.
Chromatin is a fiber polymer of double-stranded DNA which is composed up of a nucleosome core. The nucleosome core is made of histone proteins
Each nucleosome is composed of DNA enclosed around eight histone proteins which are called histone octamer.
