Which, if any, of the following sex-chromosome aneuploids in humans are fertile: XXX, XXY, XYY, XO?

Q: How many different types of gamete can be formed from an organism with the genotype Aa Bb cc DD Ee…

A: The reproductive cells of an individual are called gametes or sex cells. These are the haploid…

Q: Common red clover, Trifolium pratense, is a diploidwith 14 chromosomes per somatic cell. What…

A: Ploidy is the change in the number of chromosomes among organisms. It can be distinguished into two…

Q: If nondisjunction occurs in a chromosome pair, what will be its effect on the gametes and the…

A: Nondisjunction occurs when homologous chromosomes or sister chromatids fail to divide properly…

Q: What are the designations of the sex chromosomes in males of bugs, humans, and butterflies?

A: Chromosomal determination of sex It is also known as allosomic determinati9on of sex and is based on…

Q: What is the probability that, in an organism with a haploid number of 10, a sperm will be formed…

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

Q: Consider and individual with 3 pairs of homologous chromosomes labeled as: A/a B/b D/d (where the…

A: The gametes are produced by the meiosis process by which a diploid (2n) organism produce haploid (n)…

Q: If a dog cell (2n = 78) enters meiosis, how many chromosomes will be present in each daughter cell…

A: In Meiosis process , two divisions are involved that are Meiosis 1 and Meiosis 2.

Q: How does crossing-over affect the genetic content of the haploid gametes?

A: Gametes are produced in organisms through the process of sexual reproduction. Sexual reproduction…

Q: A diploid organism is heterozygous for 4loci,how many types of gamete can be produced?

A: 'Locus' is a term which is used to denote the fixed position of a gene on the chromosome. A gene…

Q: Below is a diploid cell in meiosis. a. How many 'a' alleles are present in Anaphase 1? b. How many…

A: A cell undergoes cell division to make daughter cells .For cell division it must undergo replication…

Q: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…

A: Translocation is caused Due to separation of a chromosome segment and its union toa nonhomologous…

Q: If an organism's diploid number of chromosomes is 10 (2n = 10), how many %3D different possible…

A: The diploid is a state of the cell when the cell has two sets of similar kind of chromosomes and the…

Q: A diploid organism is heterozygous for 4 loci, how many types of gametescan be produced?

A: Loci refer to the fixed position on a chromosome. Heterozygous organisms have different alleles for…

Q: Two phenotypically normal parents produce a phenotypicallyabnormal child in which chromosome 5 is…

A: The thread-like structure present inside the nucleus is called a chromosome. The chromosome is…

Q: What does the sex chromosome genotype XXX produce in humans?

A: Human beings have two types of chromosomes found in their body, they are, autosomes and allosomes.…

Q: A man who is a carrier of a translocated 15/21 chromosome marries a genotypically normal woman.…

A: Synapsis  It is the pairing of two homologous chromosomes during early stage of meiosis.

Q: Suppose that meiosis occurs in the transient diploid stageof the cycle of a haploid organism of…

A: The synthesis phase involves the replication of DNA for distribution in the daughter cells. It is…

Q: A wild-type chromosome has the following segments: A B C • D E F G H I Researchers have found…

A: They coil under the light microscope during prophase I and become shorter and thicker and more…

Q: What would be the sex of a human with each of the following numbersof sex chromosomes?A. XXXB. X…

A: Sex chromosomes regulate the gender of the organism.

Q: boy with Klinefelter syndrome (47,XXY) is born to a mother who  is  phenotypically  normal  and  a…

A: Klinefelter syndrome is a rare disorder that is caused in males alone. It is due to the presence of…

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: Genes A and B are located 10 cM from each other on a chromosome. Gene C is located 25 cM from gene A…

A: As per the given values,The distance between A and B = 0.10The distance between B and C = 0.15The…

Q: Suppose you discover two interesting rare cytological abnormalities in the karyotype of a human…

A: To find: To find the proportion that has the same karyotype using the given pair of chromosomes

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 does the sex chromosome genotype XY produce in humans?

A: Sex chromosome, either of a pair of chromosomes deciding whether a individual is male or female.…

Q: Assume that the diploid number of a certain species is four chromosomes, two large and two small…

A: The metaphase phase is the third phase of mitosis cell division which involves separation of…

Q: If an organism has a haploid number of three, how many tetrad structures will align on the…

A: If an organism has a haploid number of three, how many tetrad structures will align on the…

Q: Why does nondisjunction in meiosis I results in a higher proportion of faulty gametes than…

A: Of all the chromosomal disorders, the most readily recognisable from a karyogram are chromosome…

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: Show via a diagram how the product(s) of a meiotic (either I or II) nondisjunction involving the X…

A: Kilnefelter's Syndrome:  Klinefelter's syndrome is a genetic disorder in which a boy is born with an…

Q: If two loci are 10 cM apart, what proportion of the cells in prophase of the first meiotic division…

A: * Given that two loci are 10cM apart (centimorgan) *Have to calculate the proportion of cells in…

Q: How mang sister chromatids are found in a single human cell undergoing Prophase II of Meiosis?

A: Meiosis is a reduction division. Number of chromosomes gets reduced by half in daughter cells.…

Q: Given the diploid chromosome number highlighted above, what is the haploid chromosome number?

A: Cell division is the process of division of cell which occurs by two process - Mitosis Meiosis…

Q: What does the sex chromosome genotype OY produce in humans?

A: Chromosomes are the unit of inheritance that carry genetic information from one generation to…

Q: . A nondisjunction occurs in the sex chromosomes of a male mouse. What ratio of sex chromosome…

A: Nondisjunction occurs when sister chromatids and homologous chromosomes fail to separate from each…

Q: At what stage of meiosis (I or II) does crossing-over occur?

A: Crossing-over is a process that occurs during meiosis (I or II) whereby homologous chromosomes…

Q: In a diploid cell for which 2n = 20, how many chromosomes will be present in daughter cells after…

A: Cell division forms a significant part of the cell cycle. During cell division, the parental cell…

Q: How many different types of gamete can be formed from an organism with the genotype AaBbccDDEeff,…

A: Mendel performed a series of experiments to study the transmission of traits from parents to their…

Q: At the end of S phase, each chromosome has replicated to produce two complete copies that are joined…

A: The number of chromatids on chromosomes doubles after replication, however the nuclei stay diploid…

Q: In organisms with the ZZ-ZW sex-determining system, from which of the following possibilities can a…

A: The Sex-determination system helps to determine sexual characteristics in an organism. Sex…

Q: What does the sex chromosome genotype XO produce in humans?

A: Step 1 Allosomic genetic determination of sex is determined by distinct chromosomes called sex…

Q: there are 9 chromosome pairs, how many univalents are there at anaphase I on each pole?

A: Anaohase 1 is the  stage of meiotic first division in which the paired chromosome separates and move…

Q: What is the importance of chromosomal crossover events during meiosis I? Explain in a detailed…

A: Meiosis is a kind of cell division that produces four haploid daughter cells, each having half the…

Q: what is Meiotic Nondisjunction?

A: Meiosis is also known as a double division that occurs in a diploid cell and gives rise to four…

Q: How many different gamete genotypes are produced in a four-gene cross with incomplete genetic…

A: If the linkage is complete, there should be parental combinations only and no recombination.…

Q: An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B…

A: Translocation in chromosomes refers to the abnormal chromosomal rearrangement. It could be a…

Q: In elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X chromosome.…

A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…

Q: What does the sex chromosome genotype XX produce in humans?

A: The sex determination in an organism is based on the inheritance of sex chromosomes. In almost every…

Q: On average, what proportion of the genome in the following pairs of humans would be exactly the same…

A: Crossing over takes place when the chromosomal homologs swap information during the metaphase of…

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.