The mechanism responsible for the changes in fish size between generation 1 and generation 100 is the gene flow mechanism.
<h3>What is the gene flow mechanism?</h3>
Individuals may migrate from one group or region to another as part of another evolutionary mechanism. Interbreeding between the migrant individuals and the new population adds their genes to the local population's gene pool. The population's gene flow is established as a result.
For instance, when wind takes seeds far outside the range of the parent plant population, gene flow occurs. Another illustration might be when animals leave a herd. They are compelled to migrate as a result, adding new genes to the gene pool. Because gene flow makes gene pools more similar to one another, it tends to increase the similarity between remaining populations of the same species.
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Table (d) accurately reflects the expected results from the experiment.
<h3>Photosynthesis</h3>
The term photosynthesis refers to the process by which green plants manufacture their own food in the presence of light and chlorophyll. Light is the most important requirement in photosynthesis.
Looking at the question, the rate of photosynthesis is highly dependent on the proximity of the pot from light. We expect pot 1 to have the highest rate of photosynthesis since it is nearest to the light hence table (d) accurately reflects the expected results from the experiment.
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Answer:
recessive
Explanation:
A lethal allele is a gene variant associated with a mutation in an essential gene, which has the potential to cause the death of an individual. In general, lethal genes are recessive because these alleles do not cause death in heterozygous individuals, which have one copy of the normal allele and one copy of the allele for the lethal disease/disorder. In recessive lethal diseases, heterozygous individuals are carriers of the recessive lethal allele and can eventually pass the 'defective' allele on to offspring even though they are unaffected; whereas dominant lethal diseases are caused by dominant lethal alleles, which only need to be present in one copy to be fatal. In consequence, the frequency of recessive lethal alleles is generally higher than dominant lethal alleles because they can be masked in carrier individuals. Some examples of human diseases caused by recessive lethal alleles include, among others, Tay-Sachs disease, sickle-cell anemia, and cystic fibrosis.
Euglena are single cell flagellates....they have chloroplasts so are capable of photosynthesis- like a plant...but can also “eat” other carbon sources. They belong to the Kingdom Protista.
