Answer:
a) False.
b) True.
c) False.
d) True.
e) False.
f) True
g) True.
Explanation:
a) The main characteristic of homologous chromosomes is that they have an equal size. There is a difference in size on both chromosomes.
b) In number one, two chromosomes are homologous. In number two also two chromosomes are homologous. On the other hand, the chromosomes at number one and two are different. Each chromosome has two sister chromatids.
c) A DNA molecule has a double helix, that is, two chains. When a DNA chain is broken and a chromatide has a DNA chain, then two chromatids make up a chromosome and a DNA chain, in this way there are eight dsDNA molecules
d) If each chromosome contains a centromere, therefore, there are four centromeres on all four chromosomes.
e) If a chromosome contains four telomeres, therefore there will be sixteen telomeres.
f) The function of cohesin is to regulate the separation of chromatids in the cell division process. When DNA replication is complete, the DNA compacts and condenses to form mitotic chromosomes.
g) The CENPA protein is encoded by the CENPA gene.
The last Caribbean monk seal that died was the last member of a SPECIE.
All the living things, both plants and animals are placed in a hierarchical order depend on their characteristics and specie is the least stage on that rank. A specie refers to a specific group of animals which share similar physical characteristics. The Caribbean monk seal for instance is one of the specie of fishes that exist on earth.Thus, a specie is a basic unit of classification which recognize animals of the same sort.<span />
I believe that the most logical explanation for this is that the right primary bronchus is wider than the left one (and the right lung is larger than the left lung), therefore the right lung receives slightly more carcinogenic cigarette smoke with each puff. In lung cancer. the cancer cells usually arise from the epithelium lining of large bronchus.
Nutrients enter a cell with the concentration gradient by the process of diffusion.
I hope this helps!
