Carbon, nitrogen, oxygen, hydrogen
Answer: It is as a result of Genetic Mutation.
Explanation:
Mutation and sexual reproduction result in increased genetic variation.
Mutation is the change in genetic content or DNA of an organism. It can be as a result of mutagens or errors during DNA replication. When there is mutation in reproductive cells such as sperm or egg, it can be pass to the next generation. The new traits will become permanent if it is subject to natural selection.
Sexual reproduction involves the transfer of new genes from the parents and to the offsprings which lead to new phenotypes and these can help the organism to adapt to it's environment.
The phenotype ratio would be 25% each for widow's peak and freckles, widow's peak without freckles, straight hairline with freckles, and straight hairline without freckles.
<h3>Dihybrid crossing</h3>
Genotype of the heterozygous parent: HhFf
Genotype of the other parent = hhff
Crossing the two parents:
HhFf = 1/4 = Widow's peak, freckles
Hhff = 1/4 = Widow's peak, no freckles
hhFf = 1/4 = straight hairline, freckles
hhff = 1/4 = straight hairline, no freckles.
More on dihybrid crossing can be found here:brainly.com/question/1185199
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Cellular respiration input: pyruvate (partially oxidized glucose), ADP, and inorganic phosphorus. Output: ATP, carbon dioxide, and water. Photosynthesis input: water, carbon dioxide, and photon energy. Output: Oxygen and glucose.
As an enzyme fits into a substrate at the active site it undergoes a slight change to fit into the substrate. This process is denied by a concept known as the Induced Fit Model. The concept believes that the active site and the substrate are a fit for each other just like puzzle pieces that fit together. That is how when an enzyme finds its fit, that is when the chemical reaction can begin. After the reaction is complete, the enzymes detaches itself and finds another active site.