A person is born with one X chromosome, zero Y chromosomes,trisomy 21, and two copies of the other chromosomes. How manychromosomes does this person have altogether? Explain whetherthis person is euploid or aneuploid.

Q: homologous

A: Alleles are a pair of genes that share the same chromosomal location and regulate the same…

Q: What would be the amount of DNA picograms during Prophase I, Metaphase I, Anaphase I and after…

A: The amount of the DNA in a cell is generally measured in picogram unit. During the meiosis cell…

Q: Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of a male…

A: Meiosis is defined as the reductional division wherein the parent cell divides into 4 daughter cells…

Q: Contrast the events of meiosis I and meiosis II with the events of mitosis.

A: Meiosis can be defined as the process where the single cell divides twice to produce the four cells…

Q: List two differences between meiosis I and meiosis II.

A: The meiotic division is divided into meiosis 1 and meiosis 2. Gametes required for the sexual…

Q: If a diploid cell contains four chromosomes (i.e., two per set), how many possible random…

A: A diploid cell  with 2n chromosomes will have 2n possible combinations. In an organism having two…

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: Can somebody label mitosis and meiosis I/II in reference to whether the chromosomes are diploid or…

A: The process through which a parent cell divides into two or more daughter cells is known as cell…

Q: Consider a Cell that has two types of chromosomes, Chromosome 1 with gene E, and Chromosome 2 with…

A: Meiosis is a type of cell division in which one diploid mother cell ( 2n) divides into four…

Q: How many chromosomes does a human normal haploid cell have? How many chromosomes does a human normal…

A: Genetic material is nothing but the sequence of nucleic acids which is called as DNA. It contains…

Q: In which meiotic division does the separation of the homologous occur? What are the ploidies of the…

A: Meiosis is a mode of cell division. In this one cell divides to form 4 cells.

Q: What phase of meiosis explains the chromosome theory of inheritance and the law of segregation? O…

A: "Inheritance" is the process through which a child gets genetic information from his or her parents.…

Q: During meiosis, cells undergo two rounds of nuclear and cell division, but only one round of DNA…

A: Mitosis VS. Meiosis Mitosis:When one cell divides to become two daughter cells.Used for growth and…

Q: Identify two ways meiosis contributes to genetic recombination? Why is it necessary to reduce the…

A: Introduction :- Meiosis is a type of cell division that results in the formation of gametes, such as…

Q: A group of naturally occurring diploids of a species has 50 pairs of chromosomes. how many…

A: Mitosis  It is the division of chromosomes in a cell  Usually followed by cytokinesis or cell…

Q: In a cell where 2n=20, nondisjunction of two pairs of chromosomes will results into what types of…

A: * Meiosis is the process in which haploid gametes fuse and from a diploid cell.  *chromosomes do not…

Q: Why do the cells produced by meiosis undergo two nuclear divisions but only have a haploid number of…

A: Meiosis is a cell division that occurs at the time of the formation of gametes. It is divided into…

Q: to produce four aughter cells. If a nondisjunction of an autosome happens during meiosis I, what are…

A: Meiosis : In this type of cell division a parent cell is divided into four genetically different…

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: If nondisjunction occurs in humans for one pair of homologous chromosomes during Meiosis 1, what…

A: Humans have 23 pairs of chromosomes i.e. 46 chromosomes (diploid). After meiosis, each of the gamete…

Q: Imagine an organism whose diploid chromosome number is 6, and draw a cell as it appears at the…

A: Meiosis is a reductional cell division that occurs in the sex cells or gametes. It is divided into…

Q: Identify the stage of meiosis pictured below. Prophase I Prophase II Metaphase I Metaphase II…

A: Introduction :  During meiosis, a single cell divides twice to form four cells. The quantity of…

Q: if during normal division meiosis I does not occur, will meoisis II still proceed?

A: Meiosis This process involves the division of a single cell twice to form four haploid daughter…

Q: How many chromosomes does the original parent cells have at the end of meiosis? Are the daughter…

A: Meiosis is a type of cell division that leads to the formation of haploid gamete cells during the…

Q: In a diploid cell where 2n=8, how many chromatids are present in prophase?

A: The prophase is the first stage of mitosis in which nuclear membrane start disappearing and…

Q: What is the correct chromosomal condition at prometaphase of mitosis? A B C D E

A: The objective of the question is to identify the correct chromosomal condition during the…

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: How does anaphase I of meiosis differ from anaphase of mitosis? Does the number of chromatids per…

A: The cell is the basic structural and functional unit of life. It carries out various functions in…

Q: A couple is planning to have three children. What is the probability of having all boys? *

A:

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: What event of meiosis explains the chromosome theory of inheritance and the law of independent…

A: Chromosome theory of inheritance supports Mendel's laws.Observations are  - During the process of…

Q: On rare occasions, people are born with a condition known as uniparental disomy. It happens when an…

A: Human contains two number of chromosomes 15, one inherited from mother (maternal) and one from…

Q: In Figure 4-3, would there be any meiotic products thatdid not undergo a crossover in the meiosis…

A: Meiosis is reductional divison.

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: Mitosis of a cell with 20 Meiosis of a cell with 20 chromosomes chromosomes Meiosis I Meiosis II…

A: Interphase consist of G1, Sa nd G2 phase so, DNA content doubles in this phase therefore, chromosome…

Q: If a diploid individual is 1n = 5 how many chromosomes are in a somatic (non-gamete) cell?

A: Chromosomes are the structures formed by the tight coiling of DNA threads and histone proteins…

Q: Draw and label the mitotic phases (prophase, metaphase, anaphase & telophase) and meiotic phases…

A: The process in which a cell divides itself to form daughter cells is known as cell division. Cell…

Q: Non disjunction occurs when chromosomes fail to separate during meiosis, resulting in an abnormal…

A: Mitosis and meiosis are the two types of cell division that occur during M phase of cell cycle. M…

Q: Meiosis is characterized by the pairing of homologous chromosomes during prophase I. In many…

A: Introduction :- Meiosis is the reduction division through in which  gametes are formed from parent…

Q: If nondisjunction occurs in humans for one pair of sister chromatids during Meiosis 2, what…

A: In chromosome non-disjunction, the segregation of sister chromatids is prevented. It results in a…

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…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: