Hypotonic - the inside of the cell
Hypertonic - the beaker
When a cell is in G2 phase, it has already doubled in S phase its DNA, meaning that for each chromosome we have two chromatids -> 2n(number of chromosomes)×2(number of chromatids per chromosome)=number of chromatids.
If 160 is the number of chromatids on G2 phase of a chicken cell, it means that the cell has 80 chromosomes (2n), and after meiosis, process to form a sperm cell, will only have 40 chromosomes (n).
Answer:
Option A, cribra orbitalia in eye orbits.
Explanation:
Cribra orbitalia (CO) in eye orbits is caused by the iron deficiency of anemia which leads to weakening of bones of eye sockets by making it porous. It is also known as porotic hyperostosis of the orbital roof. Some of the common causes of this disease as claimed by researchers are malnutrition, insufficient diet and parasite.
Dietary deficiencies lowers the level of iron and other vitamins such as B9 and B12) thereby causing anemia known as megaloblastic anemia.
Hence option A is correct
D, smaller amount of species would require migration
