Answer:
O.
Explanation:
There are different types of soils and it is made up of different layers or horizon such as A, B, C, O, R and E. Together all the horizons forming soil profile. Each horizon containing different soil types.
O horizon: Known as top layer of the soil which contains layer of organic matter which is about two inches thick, and made up of humus such as decomposing leaves, dark-colored, carbon rich matter, twigs and microbial biomass which is mixed with small grained minerals for the formation of aggregate structures.
Answer:
During prophase, the nucleus disappears, spindle fibers form, and DNA condenses into chromosomes ( sister chromatids ). During metaphase, the sister chromatids align along the equator of the cell by attaching their centromeres to the spindle fibers.
Explanation:
The correct answer i think is antibodies
Through crossing over during meiosis. In eukaryotic cells (us), there are these things called Histone proteins. TONS of these wrap around and form what eventually will be a chromosome in the nucleus of the cell. These chromosomes contain genes which contain genetic information in the form of DNA. If a trait is sex linked it will pass through to the offspring by meiosis, specifically during crossing over when homologous chromosomes exchange genetic information.
