..ooo Simple Mobile 8:47 PM outlook.office365.com C Question 1 Butterflies have

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..ooo Simple Mobile 8:47 PM outlook.office365.com C Question 1 Butterflies have an X-Y sex determination system that is different from that of flies or bumans. Female butterflies may be either XY or XO, while butterflies with two or more X chromosomes are males. This photograph sbows a tiger sualloatail gynandromorph, which is half male (left side) and half female (right side). Given that the first division of the zygote divides the embryo into the future right and left halves of the butterfly, propose a hypothesis to explain how nondisjunction during the first mitosis maght have produced this unsual looking butterfly Question2 The lawyer for a defendant in a paternity suit asked for DNA testing of a baby girl. Which of the following set of results would demonstrate that the purported father was not actually the genetic father of the child? 1· The mitochondrial DNA ofthe child and Tather did not match. ONA sequencing of chromosome 5 of the child and Tather did not match The mitochondrial DNA of the child and mother did not match. 3 4. The mitochondrial DNA of the child and Tather" matched but the mitochondrial DNA of the child and mother did not Explain why 2 is the answer and why each of the other choices are incorrect. Furthermore, relate mitochondrial DNA. the correct answer back to

Explanation / Answer

The option 2 is correct because in all other options they had given mitochondrial DNA. The mitochondrial DNA will be maternally inherited hence the mitochondrial DNA will be similar to mother not to father. Father contributes only nuclear DNA during zygote formation, the cytoplasmic content will be contributed by mother hence organelle DNA will be maternal.

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