Land snails move by gliding along their muscular foot.
Chromatid means each of the two threadlike strands into which a chrosome divides longitudinally during cell division. Each contains a double helix of DNA
Each cell that are divided will have complete genetic information itself. So both of them will survive.
Option A.
<h3><u>Explanation:</u></h3>
The sperm and the ovum fuse to form a zygote. This zygote then undergoes cleavage divisions to divide into many cells called morula. Now in the two celled stage, if the cells divide away from each other, it gives rise to monozygotic twins or identical twins.
Both the cell contains nucleus and chromosomes or DNA inside the nucleus. So both of them contains genetic information. Thus both of them survives and develops into two identical twins. This may develop into same amniotic sac or different amniotic sac.
The most useful microscope to use would be a Compound Light Microscope. These microscopes are limited to about a good 2000X magnification. Not only can you use this to estimate the number of red blood cells, but it is good for seeing and identifying protozoa, bacteria, and organism cells.
