Answer:
A.a woman heterozygous for hair curl, a man heterozygous for hair curl will produce 25% straight hair, 75% curly hair
Explanation:
a woman heterozygous for hair curl, a man heterozygous for hair curl will produce 25% straight hair, 75% curly hair
using C as the allele for hair curl:
Cc x Cc will produce the following genotypes: CC, Cc, Cc, cc
25% will be homozygous dominant (curly hair)
50% will be heterozygous (curly hair)
25% will be homozygous recessive (straight hair)
combine the curly hair genotypes since the question asked about phenotypes which results in 75% curly and 25% straight.
<h2>Answer:</h2>
Soil bacteria are mainly involved in four steps in nitrogen cycle.
- Nitrogen fixation
- Nitrification
- Ammonification
- Denitrification
<h3>Explanation:</h3>
- First of all atmospheric nitrogen is fixed by soil bacteria (N2 to NH3/ NH4+, NO3-)
- Nitrification: The conversion of ammonium to nitrate is performed primarily by soil-living bacteria and other nitrifying bacteria (NH3 to NO3-)
- When a plant or animal dies or an animal expels waste, the initial form of nitrogen is organic. Bacteria or fungi convert the organic nitrogen within the remains back into ammonium (NH+4), a process called ammonification.
- Denitrification is the reduction of nitrates back into nitrogen gas (N2), completing the nitrogen cycle. This process is performed by bacterial species such as Pseudomonas and Clostridium in anaerobic conditions.
Well for one the impact of age of course, is not limited to organisms. overtime your DNA accumulates damage.
Bacteria was missing from the first classification system
