Its a Genetic thing, in which the albino child has received the Dominant albino trait and the sibling has not.
Interphase: Chromosomes duplicate, and the copies remain attached to each other.
Prophase: In the nucleus, chromosomes condense and become visible. Spindle fibers begin to form.
Prometaphase: The nulcear membrane breaks apart, and the spindle starts to interact with the chromosomes.
Metaphase: The copied chromosomes align in the middle of the spindle.
Anaphase: Chromosomes separate into two genetically identical groups and move to opposite ends of the spindle.
Telophase: Nuclear membranes form around each of the two sets of chromosomes, they begin to spread out, and the spindle begins to break down.
Cytokinesis: The two cells split into two daughter cells, each with the same number of chromosomes as the parent cell.
Vascular plants are the ones that posses vascular tissue, sporophyte, and true roots, leaves, and stems.
Explanation:
The vascular plants are land plants. They form a very large group in the plant family, varying in size, shape, color etc. All of the plants in this group share some characteristics that define them as vascular plants, such as having true vascular tissue, sporophyte, and having true roots, leaves, and stems.
Another characteristic of the vascular plants is that they have lignified tissue which have the purpose of distributing the minerals and water throughout all of the plant. Plants that fall into this group are the flowering plants, conifers, ferns, clubmosses, and horsetails, and they are spread out on almost all of the plant when plant life is possible.
Answer:
b) lack of water
<em>Hope this helps!</em>
