Your cousin just had twins. She tells you that twinning occurs when two sperm fertilize the same egg. You reply when two sperm fertilize the same egg. What will be your reply?

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Q: 35. The differentiation of the primitive gonads into testes or ovaries depends on the presence or…

A: The Y chromosome have SRY gene which is referred to as the sex determination region. This is present…

Q: Why is a second polar body expelled after fertilisation?   a)   To remove excess cytoplasm   b)…

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Q: An oophorectomized monkey is treated with high doses of estrogen. Which of the following changes is…

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Q: Monozygotic twins develop from a) one egg, fertilized by one sperm b) one egg, fertilized by two…

A:

Q: Which of the following embryologic events is involved in A) Development of a genital tubercle in the…

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Q: 17. In the last 8 weeks of gestation, extramedullary hematopoiesis is most likely to occur in which…

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Q: Which of the following reflects the risk of gaining more weight during pregnancy than recommended?…

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Q: In the absence of sex hormones during fetal development, the human body will: A) develop a…

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Q: Which of the following is likely to happen when you remove the testes of an adult male rat? a)…

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Q: Which of the following is NOT found in the indicated region of a spermatozoon? S A) DNA C)…

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Q: Section 2: 136. A newborn has a hypoplastic phallus. Chromosomal analysis shows a 46,XY karyotype.…

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Q: 25) Compared to asexual reproduction, the main advantage of sexual reproduction is that it: A)…

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Q: ing labeled curves best describes the variation of progesterone during the menstrual cycle? OA) B)…

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Q: Fertilization: a) Briefly describe the process of fertilization in humans, b) identifying key…

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Q: Describe the process of fertilization.

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Q: 8.) Removal of the corpus luteum from an ovary will cause which of the following changes? a.)…

A: Disclaimer: Since you have asked multiple questions, we will solve the first question for you. If…

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.