Assume that you were examining a first polar body and noted that it had one copy (dyad) of each chromosome except chromosome 21. Chromosome 21 was completely absent. What would you expect to be the chromosome 21 complement (only with respect to chromosome 21) in the secondary oocyte? What consequences are likely in the resulting zygote if the secondary oocyte was fertilized?

Q: that a gamete underwent meiotic non-disjunction. Explain two possible outcomes for the zygote that…

A: In normal anaphase that occurs during the cell division, sister chromatids are pulled by…

Q: During oogenesis, nondisjunction of X chromosome occurred in meiosis I. If the resulting egg unites…

A: Non disjunction is the failure of chromosomes / chromatids to separate during Anaphase. In Meiosis…

Q: If a human gamete with an extra chromosome participates in fertilization with a gamete with a normal…

A: A condition in which an extra copy of a chromosome is present in the cell nuclei, causing…

Q: In a cell that has just begun the process of meiosis, as shown, what is the probability that a…

A: Meiosis It is defined as the cell division in which four haploid cells are generated from a single…

Q: Though an individual with abberations such as Robertsonian translocation may be phenotypically…

A: Meiosis is defined as a process where a single cell will divide twice to generate four cells that…

Q: II. This type of cell division occurs during the formation of both sperm and ovum. The first meiotic…

A: Answer is option d.) one secondary oocyte and one polar body.

Q: The repeat expansion appears to occur during meiosis but not mitosis. Why mightthis be true?

A: Repeat expansions refer to the duplication of a single codon extensively. They are a type of dynamic…

Q: In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way…

A: Introduction: Parthenogenesis is also called virgin birth, where an organism reproduces without…

Q: Although triple-X human females typically have normal offspring, what kinds of gametes, with respect…

A: Introduction In humans, the X chromosome is one of two sex chromosomes, the other is the Y…

Q: Several cells like the one represented below undergo a normal meiosis I and meiosis II, so that each…

A: Sister chromatids differentiate during meiosis II, while homologous chromosomes separate during…

Q: Describe the events taking place during meiosis? What are the different phases? What is the…

A: Meiosis is a sort of cell division that occurs in sexually reproducing organisms' germ cells and is…

Q: How are chain chromosomes formed and will the formation of this result to sterile or fertile…

A: Although seen rarely among vertebrates, chain chromosomes are a phenomenon that can be seen to…

Q: Meiosis, oh meiosis, let me tell you what it means. It's a special kind of cell division with some…

A: Meiosis is a type of cell division that occurs in sexually reproducing organisms, which involves the…

Q: Describe the final cellular products produced when a primary oocyte undergoes meiosis (I and II) in…

A: The process of the formation of new organisms from existing organisms is called reproduction. There…

Q: During spermatogenesis, which of the following options describes when cytokinesis would occur?…

A: Meiosis is a process where single germ cell divides twice to produce 4 cells containing half of the…

Q: Which of the following does not occur in meiosis? (a) (b) (c) Homologous pairs form tetrads. Haploid…

A: In meiosis, one cell diploid undergoes division to form four haploid cells.

Q: As two students, who will be designated Student J and Student K, were studying together, they argued…

A: New cells arise from previous cells. Parent cells undergo cell division to produce new cells. There…

Q: Meiosis is an important cellular process for organisms that reproduce sexually. Two lab partners (A…

A: All these processes should be carried out in a regulated manner in order to ensure correct division…

Q: If a female is born with Turner syndrome, how might this have occurred? Draw out the potential…

A: Turner's syndrome is an autosomal dominant genetic disorder found in only females due to missing…

Q: If nondisjunction takes place in a spermatocyte in the second meiotic division and the sperm…

A: Answer:- Option B is the correct choice. The nondisjunction is a process where the sister chromatids…