Answer:
Island finches did not have beaks of the same size and shape
Explanation:
This is the evidence of variation, and therefore proof that the finches were able to survive the selective pressure by adapting their beaks to different feeds. Therefore finches that were able to adapt adjusted their beak shapes to the selecting pressure 'feeds' in the environment, and are naturally selected, and therefore adapted and evolved with time .While those without the surviving beaks lost out.
Thus changes in selection pressure, necessitated corresponding change in the beaks shape for adaption to survive( due to variation, ) and therefore natural selection for evolution
Answer:
Transcription
Explanation:
Transcription is the first process of gene expression involving the synthesis of a mRNA molecule from a segment of DNA (gene). Transcription is key to the production of proteins, which bring about biochemical activities, in every living organism. The process of transcription is catalyzed by an enzyme called RNA polymerase.
According to the question that describes a chemical found to be produced by a tropical tree that kills insects. The chemical is discovered to deactivate RNA polymerase enzyme in the insect. This utterly means the chemical is interfering with the process of transcription of genes in the insect because transcription cannot occur without RNA polymerase.
Answer:
The P generation plants were not true-breeding.
Explanation:
Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.
Answer:
The correct option is this: BRAIN REQUIRES MORE ENERGY, SO THE GUT HAD TO BE REDUCED AND LARGER BRAINS AND TOOL USED LED TO HIGHER QUALITY DIETS.
Explanation:
The Expensive Tissue Hypothesis is an hypothesis that relates the relationship between the brain and the gut during the period of human evolution. The hypothesis submits that in order for human to develop a larger brain without increasing his metabolic rate, he has to use less energy on other expensive tissues such as gut. Thus, the hypothesis suggests that human evolve a larger brain and make up for this development by evolving a gut that need less energy and by eating higher quality foods that are obtained by mean of using agricultural tools.
