From 80% to 90% of the most common human chromosome abnormalities arise because the chromosomes fail to divide properly in oogenesis. Can you think of a reason why failure of chromosome division might be more common in female gametogenesis than in male gametogenesis?

Q: In a rare event, the human ovaries may release two ovum during ovulation and each ovum may…

A: Introduction  Usually there is only one embryo develops at a time in a single pregnancy but in some…

Q: Why are newborns with an abnormal sex chromosome number more likely to survive than those with an…

A: Humans have a total number of 46 chromosomes that is 23 pairs of chromosomes in which 22 of them are…

Q: Humans have 46 chromosomes in each somatic cell.a. How many chromosomes does a child receive fromits…

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Q: An important function of meiosis is to reduce the chromosome number to exactly half. How is this…

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Q: If the 2n chromosome number of an organism is 12: (a) what is the probability of having a spermatid…

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Q: Chromosomal nondisjunction of the X chromosome in female gametes of humans means that live offspring…

A: Nondisjunction of  X chromosomes during meiosis I will result in four abnormal gametes. Two gametes…

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: During the human life cycle, what process is responsible for reducing thenumber of chromosomes from…

A: Cell division which halves the chromosomes number from 46 to 23--  We have to understand the cell…

Q: The failure of chromosome 21 to segregate during egg or sperm development produces a gamete with 24…

A: Humans have 46 chromosomes (2n) and are diploid in nature, however during fertilisation, only the…

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Q: Which of the following correctly describes the gametes that will form as a result of nondisjunction…

A: When the non-disjunction occurs in Anaphase II of meiosis II process then this indicates that one…

Q: Let’s suppose that a cell is heterozygous for three different genes (Aa, Bb, and Cc) and that each…

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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: What distal to them are responsible for holding the homologous chromosomes together during pro-phase…

A: Chiasmata is a point that links the two chromatids of homologous chromosomes together. At this…

Q: If an organism’s somatic cell has 2n=8, what will be the chromosome number of its gametes (undergo…

A: Meiosis is a reductional process. It is responsible for producing the gametes.

Q: In mice, the Sry gene is located on the Y chromosome very close to one of the pseudoautosomal…

A: The chromosomes are the genetic material present in the nucleus of the cell which is a condensed…

Q: The human contains 23 pairs of homologous chromosomes, all of which are indepently assorted. What do…

A: During the process of meiosis, male and female gametes are formed. In meiosis, DNA is being…

Q: Dogs have 78 chromosomes in their diploid cells. If a diploid dog cell enters meiosis, how many…

A: chromosomes and chromatids will be present in each daughter cell at the end of meiosis I :

Q: During oogenesis in an animal species with a haploid number of 6, one dyad undergoes nondisjunction…

A: Introduction oogenesis is the production or development of an ovum .Oogenesis is that the method of…

Q: BJE the diploid human chromosome number (2n) =46, what will be the chromosome number per cell in…

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

Q: Within the sperm and egg cells of a frog, there are 13 chromosomes.  What would be the diploid #?

A: A frog gamete has 13 chromosomes.

Q: Explain how the X and Y chromosomes are able to pair together in meiosis as homologous chromosomes.…

A:

Q: If human somatic cells have 46 chromosomes, how many chromosomes do human gametes have?

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

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Q: A mature female tiger, with 38 diploid chromosomes in each somatic cell, produces haploid oocytes…

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Q: Human somatic cells have 46 chromosomes. How many chromosomes are present in human cells undergoing…

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Q: Nondisjunction, is when a chromosome does not separate during meiosis. When nondisjunction occurs in…

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Q: Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With…

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Q: Humans are 2n=46 in terms of their chromosomes per somatic and germ cell. Knowing the chromosome…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: How many sets of human chromosomes are in each of the following cell types? a. an oogonium b. a…

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Q: A chicken has 78 chromosomes in its somatic cells. How many chromosomes did the chicken inherit from…

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

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Q: A male Drosophila melanogaster has the genotype A/a; B/b; C/c; XD/Y (all genes are on separate…

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Q: There are 56 chromosomes in a mature elephant cell. If one of the elephants cells responsible for…

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

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

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

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Q: In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and…

A: ANSWER;- Stem cell arises from the differentiation and division of primordial germ cell in embryos.…

Q: Please explain what would be the consequences in successive generations of offspring if the…

A: The genetic content of eukaryotes is found in the nucleus. It is tightly packed and can be seen in…

Q: Are there any factors that can cause an increase in the risk of developing an error in the meiotic…

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Q: Obvious differences in the position of chromosome copies are clear during metaphase of mitosis and…

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Q: In fruit flies, sex is determined by the ratio of X chromosomes to autosomes. What would be the…

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Embryology