Crossing-over occurs betweena. sister chromatids of the same chromosome.b. chromatids of nonhomologous chromosomes.c. nonsister chromatids of a homologous pair.d. None of these are correct.

Q: Diploid vs. Haploid: Given 2n = 30 a. Haploid (n) number?  b. This organism has a total of how many…

A: Chromosome is made up of protein and single DNA molecule and is a thread like structure which is…

Q: Which of the following statements accurately describes a differencebetween mitosis and meiosis?a.…

A: Answer is e.) Both a and c are correct.

Q: During meiosis I, which structures separate?   A. Sister chromatids   B. Homologous chromosomes…

A: Meiosis It is defined as a process in which a cell divides twice to form four cells having half the…

Q: Compare and contrast Somatic and Sex cells (gametes)

A: Cell is the structural and functional unit of life. There are two types of cell - somatic cells are…

Q: Homologous chromosomes are (a) the same thing as sister chromatids. (b) a pair of chromosomes of the…

A: Chromosomes are filamentous bodies present in the nucleus. The genetic material is distributed in…

Q: Crossing-overa. results in genetic recombination between nonhomologous chromosomes.b. results in…

A: The process of the meiotic cell division is divided into two stages. Meiosis I or reductional cell…

Q: DRAW IT Could any other combinations of chromosomes be generated during meiosis II from thespecific…

A: Meiosis is a double division which occurs in a diploid cell (or nucleus) and gives rise to four…

Q: Mitosis differs from meiosis in the following ways EXCEPT:(a) Mitosis results in a full complement…

A: The cell is the basic structural and functional unit of life of all living organisms capable of…

Q: cell contains 8 pairs of chromosomes. At the end of successful cell division each daughter cell…

A: Ans. a) As we seen,  parent cell contain 8 pairs of chromosomes that means 16 chromosomes. And the…

Q: u Uaugnter cens in mitosis 48) Which best describes the process of independent assortment? A) The…

A: independent assortment It occurs during meiosis 1 at metaphase 1 of the cell cycle. The homologous…

Q: e difference between prophase I of meiosis and prophase of mitosis? How are they similar?

A: Introduction: The first stage of cell division in both mitosis and meiosis is known as Prophase.…

Q: Diploid cells have a. two chromosomes.b. two sets of chromosomesc. one set of chromosomes.d. two…

A: During the fertilization process, the male and female species participate in the fusion process and…

Q: Two genetically identical strands of a metaphase chromosome, joined at thecentromere, are itsa.…

A: Chromosomes are the thread-like structures that are formed by the coiling of the DNA around the…

Q: Which of the following is true of a species that has a chromosomes number of 2n=16? a. The species…

A: Meiosis is a reductional division which is responsible for producing the gametes from the diploid…

Q: Today you learned about the structure of chromosomes and some of the conditions that arise in humans…

A: Cell duplication is very complex and long process. For cell duplication preplanning is started from…

Q: (a) Draw a pair of acrocentric homologous chromosomes as they would appear in Gz Indicate…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Crossing over is the process wherebya. homologous chromosomes cross over to opposite sides of the…

A: Answer: Introduction: Crossing over means which occurs among the homologous chromosomes to rise…

Q: Pairs of chromosomes with almost identical geneticcomposition and that are found in cells of both…

A: Chromosomes are the vital part of heredity , that include a thin thread like structure. Chromosome…

Q: Define the following terms: a) sister chromatids:…

A: Genes act as the physical and functional unit of heredity.Genes are composed of DNA.Gene encodes for…

Q: During crossing over,a. chromatids of homologous chromosomes exchange parts.b. mutations occur with…

A: Answer- Cells undergo two different types of cell division called as mitosis and meiosis.

Q: At the metaphase plate during metaphase II of meiosis, there area. chromosomes consisting of one…

A: Answer is option b.) unpaired duplicated chromosomes.

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: The crossing over process occurs during meiosis II, which is an exchange of chromosome segments…

A: Meiosis l is reductional division whereas meiosis ll is equational division.Meiosis leads to the…

Q: Chromosome duplications often result in abnormal phenotypes because a. developmental processes…

A: Duplication is a type of mutation. It involves the production of more copies of a particular region…

Q: Which of these describe the process of mitosis? Two haploid daughter cells are produced Four diploid…

A: Mitosis It is the distribution of two sets of chromosomes into two separate nuclei. The process…

Q: Draw a picture of a cell with 6 chromosomes in Metaphase of Mitosis, Metaphase I of Meiosis, and…

A: Metaphase is the second stage of cell division in which the chromosomes arrange themselves in an…

Q: During meiosis II, which structures separate?   A. Sister chromatids   B. Homologous chromosomes…

A: D. Neither A not B

Q: What is the function of the kinetochore during mitosis?a. It promotes the attachment of monads to…

A: The term ‘cell division’ is defined as a series of phases, which the cell passes through to divide…

Q: The dividing cells shown in the picture would be in _?_ of _?_. Assume that the starting cell was…

A: The dividing cells shown in the picture would be in _?_ of _?_. Assume that the starting cell was…

Q: Translocations occurs between A) homologous chromosomes B) Nonhomologous chromosomes C) homologous…

A: The migration of chromosomal sections among chromosomes is known as interchromosomal translocation.…

Q: Aneuploidy refers to the loss or gain a chromosome part. B. Polyploid cells have extra chromosome…

A: Polyploidy is defined as the presence of more than two haploid sets of chromosomes in a species. It…

Q: Meiosis results in which what of the following? a.)2 haploid daughter cells b.)2 diploid daughter…

A: Answer: Introduction: The order of events that results in cell development and cell division is…

Q: Crossing-over occurs between Select one: O A Sister chromatids of the same chromosome. O B. Two…

A: Meiosis  It a type of cell cycle where the number of chromosome reduced to their original value.

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

A: Cell-division is the process by which a parent cell divides and makes two or more daughter cells. It…

Q: Which of the following is not a contributor to genetic variation? (a) replication of sister…

A: Genetic variation means the diversification of the sequences present in the genome of an organism.…

Q: Same pair of chromose that carries an identical genetic information as other a.  haploid chromosome…

A: Chromosomes are the highly condensed form of DNA and proteins which contains gene that can be…

Q: Crossing-over occurs between Select one: O A Sister chromatids of the same chromosome. B. Two…

A: A cell biology is defined as the study of structure and function of the cell where the cell is the…

Q: In your own words: •Explain the process of Mitosis •Explain the Process of Meiosis

A: Mitosis is the equational division. Meiosis is the reductional division.

Q: The kinetochore binds to which part of eukaryotic chromosomes? a. The telomere b. The centromere c.…

A: Centromere Each chromosome (at prophase or metaphase) is consist of two chromatids. Both the…

Q: Nondisjunction produces daughter cells with an imbalance of chromosomes. A cell biologist examines…

A: When homologous chromosomes or sister chromatids fail to differentiate during meiosis, the result is…

Q: A species has a diploid chromosome number of 6. If a cell from an individual of this species…

A: Meiosis is the cell division which consists of two two stages. First stage is the reduction division…

Q: autotetraploid and an allotetraploid

A: Autotetraploid:- Autotetraploidy are the individual, organism or a hybrid cells bearing / having…

Q: Describe the relationship between two homologous chromosomes in diploid

A: The two chromosomes in the pair of homologous chromosome are similar in shape and size, also they…

Q: Explain the difference between homologous chromosome pairs and sister chromatids.

A: The genetic information of most species is DNA. Humans and other diploid species have two copies of…

Q: Mendel's observation of the random distribution of two different traits from parents to offspring…

A: Mendel on working on the pea plants proposed 3 mendelian laws, the traits or genes which inherit by…

Q: In a diploid cell, two homologous chromosomes are: A) similar , but from two different species B)…

A: A cell with two complete sets of chromosomes is known as a diploid cell. This is the haploid…

Q: What is necessary for a chromosome bridge to occur?     a.     centromeres are necessary      b.…

A: Introduction Chromosomes are DNA-carrying structures found in cells' nuclei. The material in which…

Q: and down syndrome the victim has an extra chromosome 21. Therefore, down syndrome is a kind of ___…

A: Genetic disorders are those which results due to any changes in gene or due to  chromosomal…

Q: which Mistakes during mitosis can generate clones of aneuploid cells

A: Chromosomes are filamentous bodies present in the nucleus. They have the ability to self replicate…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.