Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. There is also a wide range of skin color across people. Skin color is also a polygenic trait, as are hair and eye color.
All the above:
Eye color
height
skin color
<span>Factors that contribute to warming include
1. Carbon dioxide (CO2) from fossils fuel combustion.
2. Parts of earth's surface which have low reflectivity ( low albedo).
3. Tropospheric Ozone (O3).
4. Black carbon aerosols and soot particles.
5. methane (CH4) from decomposition and feedlots.
6. Nitrogen oxides (N2O) from denitrification and fossil fuel combustion.
Factors that contribute to cooling include;
1. Condenses water vapor (Cloud albedo).
2. Parts of earth's surface with high reflectivity (high albedo).</span>
Answer: A heterozygous genotype stands in contrast to a h o m ozygous genotype meaning that there are different portions where the sequence is different.
Answer AND Explanation:
A small portion of energy is passed from one trophic level to the next successive level. The rest is lost to the environment. The progressive loss of energy at each trophic level puts a natural limit on the total dry mass of living biomass that can exist at each successive trophic level. In a stable ecosystem, the biomass in any trophic level should be more than the successive level in order for it to support the successive level.
When was BSE first discovered?
BSE first appeared in British cattle in the mid-1980s. There have been numerous cases detected in other countries. A complete list of countries is available from both the U.S. Food and Drug Administration (FDA) and the U.S. Department of Agriculture (USDA).