CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0%
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25%
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50%
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75%
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Detailed explanation-1: -Final answer: There is a 25% chance that the next child will have attached earlobes.
Detailed explanation-2: -In this case, the genotype for the gene that affects earlobe type is eeeee. This means that the person has attached earlobes.
Detailed explanation-3: -As you can see, two of the four possible offspring, or 50%, have the genotype ee and will have attached earlobes. This means that the probability of an offspring having attached earlobes is 50%.
Detailed explanation-4: -The answer is c) 50%. This can be visualized with a Punnett square. The individual with attached earlobes has the genotype ee and can only produce e alleles. The individual that is heterozygous with free earlobes has the genotype Ee and can produce both E and e alleles.
Detailed explanation-5: -There is one box with “EE", so there is a 25% chance (one in four) that each offspring will get “EE", which means two dominant genes. That child will have free earlobes.