How do we know whether two chromosomes are homologous?

Q: What is the relationship between homologous chromosomes, copies of a gene, and alleles?

A: Chromosomes are thread-like structures that are located in the nucleus. It is composed of protein…

Q: What is meant by the termhomologous chromosomes?

A: Chromosomes are filamentous bodies present in the nucleus. They are composed of DNA(…

Q: Define the important exception to the concept of homologous pairs of chromosomes ?

A: The complete set of DNA is called a genome. In prokaryotes, the genome is composed of a…

Q: Given that most chromosomes occur in homologous pairs, do most genes also occur in pairs?

A: Human beings have 23 pairs of chromosomes. Out of which 22 pairs are called autosomes and one pair…

Q: Which pair number represents the sex chromosomes?

A: The karyotype is the type of chromosomes or number of chromosomes present in the nucleus of a…

Q: At which stage do homologous chromosomes separatefrom each other?

A: A set of the maternal and paternal chromosomes is collectively known as a homologous chromosome.…

Q: If there are 9 chromosome pairs, how many univalents are there at anaphase?

A: The chromosomes are found in eukaryotic cells that is the compact form of DNA. The DNA with histone…

Q: What are recombinant chromosomes? How do they differ from the original chromosomes from which they…

A: Chromosomes are thread-like structures present in the nucleus of the cell. Chromosomes are made up…

Q: How do we know that chromosomes exist in homologous pairs?

A: The eukaryotic cells contain different organelles like lysosomes, mitochondria, Golgi apparatus,…

Q: How many chromosome duplications take place in Meiosis?

A: Meiosis: It is the process of cell division forming four daughter cells that contain half of the…

Q: With respect to genetics, how is Y chromosome DNA different than nuclear DNA?

A: DNA is a genetic material which exists in coiled form and carries genetic information and passes it…

Q: why is meiosis important concept in genetics?

A: Ever since Charles Darwin postulated his theory of Natural selection, it became important to…

Q: What is pairing of homologous chromosomes known as? Where that pairing takes place?

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

Q: Which of the following does NOT accurately describe homologous pairs of chromosomes?

A: Homologous chromosomes are pairs of chromosomes that are similar in size, shape, appearance, gene…

Q: What are two nonhomologous chromosomes exchange parts?

A: Translocation is a type of chromosomal abnormality in which a chromosome breaks and a portion of it…

Q: In a sample of 1000 patients with Down syndrome, a geneticist discovers that 95% of them are…

A: Trisomy is a kind of polysomy in which three instances of a particular chromosome occurs. Generally…

Q: Why is random assortment of chromosomes necessary? What can we expect if this does not occur?

A: When reproductive cells mature, the Principle of Independent Assortment outlines how various genes…

Q: How many chromosomes are in a human karyotype?

A: When eukaryotic cells divide via mitosis, the chromatin condense the highest to a point wherein we…

Q: What genetic process is occurring in a puff of a polytene chromosome?

A: Polytene chromosomes, also known as giant chromosomes, are commonly found in the cells of salivary…

Q: How can alteration in chromosome number or structure impact living organism? Explain how Down's…

A: Meiosis also called as reductional division is the type of cell division where the number of…

Q: If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete…

A: Muscle cells are also called as myocytes. These muscle cells are made up of muscle tissue. Muscle…

Q: Are there trisomies of the other chromosomes besides chromosome 21?

A: Yes, besides chromosome 21, other trisomies are also there.

Q: What is a chromosomal Island?

A: The term chromosomal island is generally used in microbiology with regard to the bacteria. The…

Q: Why is the word homologous used to describe chromosome pairs, rather than the word identical?

A: Homologous chromosomes are the chromosomes that is acquired one from the paternal and another from…

Q: What are recombinant chromosomes? How do they differ fromthe original parental chromosomes from…

A: Recombination is the process in which sequences of DNA molecules are broken and then recombined to…

Q: What is the basis for homology among chromosomes?

A: The thin, string-like structure, occurring in the nucleus of all cells of an organism is a…

Q: What are polytene chromosomes and chromosome puffs?

A: Giant chromosomes are much larger in size than the normal chromosomes, reaching a length a length of…

Q: How do humans maintain the normal number of chromosomes across generations?

A: Chromosomes are complex chemical structures that are composed of DNA and proteins. Each human cells…

Q: How does the process of recombination add to the observed genetic variation of daughter cells?

A: Genetic recombination is a complicated process  defined as the exchange of genetic material between…

Q: If two genes are more than 50 mu apart, how would you ever be able toshow experimentally that they…

A: The exact location of the gene on the respective chromosomes is identified by the technique of…

Q: If an organism has 15 pairs of homologous chromosomes, how many chromosomes will each daughter cell…

A: Mitosis: Some cells in the skin, embryo, gut divide constantly and there are few cells that divide…

Q: What are micrographs of the stained chromosomes in homologous pairs arranged by decreasing size?

A: The building blocks of the DNA (Deoxyribonucleic acid) are the nucleotides. A chromosome is a highly…

Q: What causes polyploidy?

A: Heredity as we know is the passing on of traits from parents onto their offsprings. Organisms that…

Q: What functions do mitosis and meiosis play in the science of genetics?

A: Introduction :- Mitosis is the process of cell division that results in the production of two new…

Q: What does it mean if you have 24 chromosomes?

A: Chromosomes are a compact form of DNA wrapped around some proteins and are generally present in a…

Q: What are nonhomologous chromosomes?

A: The chromosome is an organized structure of proteins and DNA (Deoxyribonucleic acid) in a cell. It…

Q: What is chromosomal rearrangements?

A: “Chromosomes” are “thread-like structures” and is composed of “protein” and a “DNA molecule” which…

Q: Which of the following describes a Homologous Chromosome?

A: The gene is the basic fundamental of heredity. It is found in the chromosomes of the nucleus of the…

Q: hat is the 2n number for the dog?  What is the n number for the dog?

A: 2n number of the dog=78

Q: If two chromosomes of a species are the same length and have similar centromere placements and yet…

A: Chromosomes are carriers of genetic information. They are the physical units that transfer genetic…

Q: What is the difference between alleles and homologous chromosomes?

A: The term 'chromosome' has been derived from the Greek words which means 'color (chroma) and body…

Q: How do you determine the order of genes on a chromosome?

A: Genes are the structural and functional units of heredity that carry coded genetic information in…

Q: What is known as homologous chromosomes ?

A: Chromosomes are highly condensed forms of deoxyribonucleotide [DNA] that are thread-like structures…

Q: Why are the homologous regions of the X and Y chromosome important during meiosis?

A: One of the defined types of cell divisions characterized by the occurrence of two rounds of division…

Q: How many chromatids are present  in a duplicated chromosome?

A: Chromosomes are the amalgamation and groupings of deoxyribonucleic acids in a cluster within the…

Q: What are crossing over between homologous chromosome take place?

A: Chromosome is the package of densely packed chromatin fibers with DNA and histone proteins. In…

Q: Explain what is meant by the term homologous chromosomes ?

A: Chromosomes are condensed forms of chromatin that are visible during cell division. They were found…

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: What is an example of polyploidy?

A: The ploidy term refers the number of sets of the chromosomes. The euploidy refers to the chromosomal…

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.