Why is polyploidy rare in some animals?

Q: What are called aneuploidy?

A: Nondisjunction is the failure of sister chromatids or homologous chromosomes to separate properly…

Q: How is aneuploidy different from polyploidy? What are the mechanisms by which aneuploidy and…

A: Cells are the fundamental unit of life. Cell division is the process by which two daughter cells…

Q: Do genetic differences ever occur in asexually reproducing organisms? If so, how?

A: There are two different modes of reproduction namely, asexual reproduction and sexual reproduction.…

Q: How much  is the weight of  1 copy of the human haploid genome  ?

A: The genome of an organism refers to the hereditary information, which is encoded in the DNA of the…

Q: How is it that the embryo sacs of some apomictic species look normal but contain diploid cells?

A: Apomictic species are the ones that undergo asexual production of a seed from the ovule's maternal…

Q: What terms can be used to describe a fruit fly that has a total of 7 chromosomes because it is…

A: Chromosomes are the condensed form of DNA (deoxyribonucleic acid) along with histone proteins. These…

Q: What are   most common types of aneuploidy?

A: The presence of an abnormal chromosomal number in a cell is called aneuploidy. The presence of an…

Q: In polyploid organisms, what does x refers to .?

A: Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each…

Q: In a genomic comparison between humans and yeast, what geneswould you expect to be similar?

A: Saccharomyces cerevisiae  is otherwise called as bakers yeast. It is an eukaryotic organism with…

Q: What is the main reason for meiosis in animals? What is the main reason for mitosis in animals?

A: The process that allows a cell to divide into two or more daughter cells is called cell division. It…

Q: How polyploidy arises naturally ?

A: Chromosomes can be thread-like structures that is situated inside the nucleus of animal and plant…

Q: What is the difference between Euploidy and polyploidy?

A: Chromosome may be defined as the condense form of DNA that can be inherited from one generation to…

Q: What would the human life cycle be like if we have an alternation of generations? Assume that the…

A: In the sporophyte stage a diploid (contains two groups of chromosomes) plant body develops and…

Q: Why is polyploidy important

A: A euploid organism has a chromosome number that is an exact multiple of a chromosome set in its…

Q: What is a Haploid

A: Ploidy is the number of the set of chromosomes that are present in the nucleus. It can be haploid or…

Q: trawberries are octoploid. Bananas are triploid. Kiwi fruits are diploid. How does ploidy level…

A: Ploidy level is directly related to the amount of DNA present inside the cell or  Ploidy is a term…

Q: . What is aneuploidy? Differentiate between aneuploidy and polyploid

A: Aneuploidy Aneuploids differ from standard 2n chromosome complements in single chromosomes. These…

Q: what is euploidy

A: The DNA molecule is packed inside a thread-like structure known as a chromosome. It is present in…

Q: Where are chromosomal fragments of non sister homologs exchanged and remain as part of the process…

A: Crossing over happens all the time in  prophase I (Meiosis)  before formation of tetrads area unit…

Q: Explain the Variations of Euploidy?

A: Variations in species exist due to variations in the chromosome structure as well as the chromosome…

Q: Drosophila melanogaster has which four linkage groups?

A: The tendency of the genes to locate on the same chromosome, to stay together in the hereditary…

Q: how would the chromosomes content of the eye cell of a man compare with the chromosome content of…

A: Chromosomes are thread like structures that are the condensed form of DNA. They constitute the…

Q: Describe the aneuploidy conditions in humans

A: Aneuploidy is a genetic disorder in which number of chromosomes either increase or decrease than the…

Q: Where are the two ends of a kinetochor  microtubule?

A: Mitosis:A process of cell division in the case of eukaryotes in which the nucleus is first split…

Q: Aneuploidy is typically detrimental, whereas polyploidy is sometimes beneficial, particularly in…

A: Ploidy refers to the chromosomal number in an organism. Euploidy is a condition when two pairs of…

Q: Describe examples of aneuploidy in humans?

A: Ploidy is defined as the number of chromosomes present in the nucleus of a cell. In normal somatic…

Q: As pointed out in the section Evolution of the Y Chromosome, some researchers have predicted that…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Where are the two ends of a kinetochore microtubule?

A: Cells are the fundamental basic unit of life. They are modified in different ways to carry out…

Q: why do the embryos of different species resemble each other?

A: The embryo is an early stage of development in multicellular organism (from fertilization to start…

Q: What are some common advantages of polyploidy in plants?

A: Introduction Ploidy can be defined as the number of a set of complete chromosomes in a cell. There…

Q: Discuss the concepts of homologous chromosomes, diploidy, and haploidy. What characteristics do two…

A: Diploidy- means that both members of a homologous pair are present(2n).  Haploidy- the presence of…

Q: What structure is most important in forming the tetrads? a. centromere b. synaptonemal complex c.…

A: Chromosomes are the rod shaped, dark stained bodies which are most prominently seen in the metaphase…

Q: In polyploid organisms, what does n refers to .?

A: Ploidy refers to the number of sets of chromosomes that are present in a cell and hence determining…

Q: Why do some genes express themselves later in life? Why not earlier? How many chromosomes in a human…

A: Some genes are expressed later and not earlier:Gene expression is defined as the process by which…

Q: How is lozenge eye in drosophila an example of pseudoallelism?

A: Pseudoalleles are formed by duplication of a gene which further evolved to develop new functions.…

Q: Why does aneuploidy increase with maternal age?

A: A normal human cell has 46 chromosomes. Aneuploidy is a condition when a human cell has an abnormal…

Q: Is polyploidy a mutation?

A: Polyploidy may be defined as the addition of multiple sets of chromosomes inside an organism which…

Q: How many chromosomes does Drosophila melanogaster have?

A: Drosophila melanogaster is a species of fly in the family Drosophilidae. Drosophila is commonly…

Q: What is a genome? Describe the following terms/structures as they pertain to a eukaryotic genome:…

A: In genetics, the eukaryotic genome is more advanced than the prokaryotic genome. It consists of…

Q: discuss the Variations of Euploidy

A: Euploidy is a type of chromosomal aberration. Chromosome is a compact structure of a DNA molecule…

Q: Every chimpanzee somatic cell contains 48 chromosomes, in which genes are localized. How many genes…

A: Chromosome are highly condensed, coiled chromatin fibre. Each chromosome is made up of protein and a…

Q: What is crossing over and where does it occur in meiosis? Why is crossing over important for…

A: When a mother cell divides into two or more daughter cells, a parent cell has undergone the process…

Q: What is a homolog? With regard to genes and alleles, how arehomologs similar to and different from…

A: Genes are the units of heredity that are transmitted through generations. Genes contain the genetic…

Q: Define the term polyploidy ?

A: Ploidy can be defined as the number of sets of homologous chromosomes in an organism's or cell's…

Q: Which is not an example of euploidy?

A: Answer: EUPLOIDY = It is the chromosomal variation which involves an entire set of chromosomes in a…

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.