Answer:
Okay let me break this down, so you have a pure red and pure white feathered chicken meaning that the chickens have homologous alleles. Overtime, as you breed the two you may get multicolored chickens but they can carry the recessive white feathers alleles (FWFW) meaning that they can still produce all white chickens and they can continuously do that over generations. Selective breeding may be negative because you may not get the desired result, you could breed for the wrong traits, other characteristics are lost and the resulting population is very similar. Less genetic variation can cause the chickens to not be resistant to problems like diseases and could fall ill.
Explanation:
Answer:
The Earth’s biomes are categorized into two major groups: terrestrial and aquatic. Terrestrial biomes are based on land, while aquatic biomes include both ocean and freshwater biomes.Terrestrial ecosystems are known for their diversity; they are grouped into large categories called biomes. Grouping these ecosystems into just a few biome categories obscures the great diversity of the individual ecosystems within them. For example, there is great variation in desert vegetation: the saguaro cacti and other plant life in the Sonoran Desert, in the United States, are relatively abundant compared to the desolate rocky desert of Boa Vista, an island off the coast of Western Africa
The few dandelions developed a resistance to the herbicide and the herbicide would not be effective in the control of future generations of dandelions because the future generations would be offspring of the resistant strain of dandelions which means the herbicide wouldn't have an effect on them. This principle has become a concern in the world of farming with the introduction of agent orange corn and round up ready GMOs. These GMOs have their genetic code altered to become resistant to their respective herbicides viz. Agent Orange and Round Up. If weeds were able to somehow be able to get thst gene. There would be problems
Answer:
element
Explanation:
An element cannot be broken down by any chemical means. However, nuclear reactions can lead to the generation of new elements.
