P generation Male Female XY XX Meiosis Gametes X Y Fertilization F, generation X Sperm Y XX XY Female Male Eggs XX XY Female Male Conclusion: 1:1 sex ratio is produced.

Q: A certain species of animal has 18 chromosomes in its diploid cells (2n=18). Describe what the…

A: Introduction Strasburger 1875 first reported the presence of chromosomes in eukaryotic cells. The…

Q: What is something that occurs in prophase 1 of meiosis but not mitosis? How does this affect the end…

A: Crossing over between homologous chromosomes occurs in prophase 1 of meiosis  but not mitosis During…

Q: Very rarely, one member of a pair of identical (monozygotic) twins will have Turner syndrome (XO)…

A: A chromosomal disorder in which a female is born with only one X chromosome leading to developmental…

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: Describe one way that the events of prophase I vary from those of prophase ll during meiosis.…

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: In a human secondary spermatocyte, if the chromatids of one chromosome failed to separate during the…

A: The failure of separation of sister chromatids during cell division is termed nondisjunction. In a…

Q: A male baby is born with the sex-chromosomeconstitution XYY. Both parents have normal sex…

A: The failure of separation of sister chromatids during cell division is termed nondisjunction. In the…

Q: Given that each secondary spermatocyte has 23 chromosomes, how is it possible that at the end of…

A: Spermatogenesis is a process to produce sperms in seminiferous tubules. Meiosis division takes place…

Q: Name and explain the two events during meiosis that contribute to genetic variability among gametes.

A: Meiosis is the cell division process that involves division of a diploid (2n) mother cell into to…

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: Determine if the cells in telophase I of meiosis are haploid or diploid.

A: Telophase I is a phase observed in the process called meiosis. Meiosis or reductional division is…

Q: If a diploid a 40 pair of chromosomes, what is the chromosome number by the end telophase?

A: Introduction: Cell cycle is an ordered sequence of events occurring in a cell. Cell cycle results in…

Q: in the expermient of following chromosomal dna movement through meiosis, how many chromosomes were…

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

Q: Describe how meiosis provides for genetic variability.If an animal had a haploid number of two (no…

A: Meiosis provides genetic variability : during prophase I , the double chromatid homologous pairs of…

Q: If a diploid cell entering meiosis has 12 chromosome pairs, what is the number of possible…

A: Meiosis is a process of cell division, where cell divides twice to produce four daughter cells which…

Q: What is being separated during anaphase I of meiosis? What happens to the sister chromatids during…

A: Please follow step 2 for detailed explanation.

Q: meiosis is often termed as a reduction division. what is reduced and when is it reduced?

A: Meiosis is the basis of the generation of new combinations from the parental type(recombination)…

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: Draw the distribution of DNA (one set of homologous chromosomes) during meiosis. What happens in…

A: Meiosis is a type of reductional cell division in sex-cell such as gametes which results in the…

Q: Determine if prophase II of meiosis contains 2 chromatids or only one chromatid.

A: A single cell divides twice during the meiotic process to produce four haploid daughter cells. The…

Q: Assuming that independence assortment occurs during meiosis what types of gametes will form…

A: Independent assortment is the separation of gene pairs independently from the other gene pairs.…

Q: Briefly describe nondisjunction in meiosis and identify several potential consequences. In other…

A: Meiosis is the type of cell division that occurs in the sex cells to produce gametes in the form of…

Q: Assume that meiotic nondisjunction event causes trisomy 8 in a newborn. If two of the three copies…

A: Nondisjunction is that the failure of the chromosomes to separate, that produces daughter cells with…

Q: major events occur during meiosis

A: Meiosis is a type of cell division where four gametes or daughter cells are produced as a result…

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: The genetic constitution of each cell after telophase II is different from the others. What two…

A: Meiosis is a specialized type of cell division that occurs in reproductive cells. Meiosis results in…

Q: If an organism has 15 pairs of homologous chromosomes, how many chromosomes will each daughter cell…

A: Mitosis: Some cells in the skin, embryo, gut divide constantly and there are few cells that divide…

Q: A diploid organism produces four gametes from one parent cell through the process of meiosis.  Two…

A: Meiosis is made up of two cell divisions occurring in succession in sexually producing organisms and…

Q: Determine if telophase II of meiosis contains 2 chromatids or only one chromatid.

A: Introduction :- One of a chromosome's two identical halves that has been replicated in preparation…

Q: A diploid organism has five pairs of chromosomes in each somatic cell. Assuming that no crossing…

A: When the DNA molecule is well organized and packaged into thread-like structures in the nucleus of…

Q: What is the purpose of meiosis? (You may select more than one answer if you think multiple options…

A: Meiosis is a mechanism in which a single cell divides twice to create four cells with half the…

Q: During meiosis in male mammals, sex chromosomes segregate to produce two types of sperm: X‑bearing…

A: In mammals sex determination is male heterogametic type in which the male produces two types of…

Q: sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many…

A: Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half…

Q: What processes contribute to genetic diversity in meiosis? Describe in detail the event that occurs…

A: The indirect process of cell division in which the Chromosome of parent cells divide once, but…

Q: During which phase of meiosis do alleles of a gene separate? Does it occur in meiosis I or II?

A: Anaphase 1 is the third stage of Meiosis I and it occurs after prophase I and metaphase I.

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.