OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Some yeast genes can be replaced by human genes that then continue to produce the same human proteins in the yeast cells. Which statement helps to explain this evidence?
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The DNA of yeast and humans is identical.
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Yeast and humans have the same number of chromosomes.
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The genetic code is universal.
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Yeast and humans are both eukaryotes.
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Explanation:
Detailed explanation-1: -Some yeast genes can be replaced by human genes that then continue to produce the same human proteins in the yeast cells. Which statement helps to explain this evidence? The genetic code is universal.
Detailed explanation-2: -Although it may seem that yeast and humans have little in common, yeast is a eukaryotic organism. This means that, like our cells, yeast cells have a nucleus that contains DNA? packaged in chromosomes?. Yeast cells share many basic biological properties with our cells.
Detailed explanation-3: -Gene mutation If unrepaired, such errors will change the sequence of the DNA bases and alter the genetic code. Mutation is the random process whereby genes change from one allelic form to another.
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