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

Q: How many pairs of chromosomes do cattle and horses have?

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

Q: how are all 46 human chromosomes able to fit into each of the microscopic cells in our bodies?

A: Chromosomes are the thread-like structures present inside a cell nucleus. Chromosomes are…

Q: What does an extra chromosome 16 mean?

A: Chromosomes, the physical carriers of genes, are the microscopic thread like structures in which the…

Q: How many genes are there present on chromosome 13 ?

A: Chromosomes are the carrier of genetic material deoxyribonucleic acid (DNA). They are coiled in…

Q: What are homologous chromosomes? Which are the human cells that do not have homologous chromOsomes?

A: From the above question we have to explain What are homologous chromosomes? And aslo we will…

Q: How are chromosomes named on the basis of their centromere placement?

A: A chromosome is a thread-like structure that exists in living cells. It is made up of genetic…

Q: How is the chromosome region where the centromere is located called? How are chromosomes classified…

A: Cell biology is considered as the study of cells, their structure, and their functions. The cells…

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 chromosomes do you receive from your parents?

A: Chromosomes are the constricted forms of chromatin fibres and histone proteins. This chromatin fibre…

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: What is the other name given to sex chromosomes? What is the function of sex chromosomes?

A: Introduction - A sex chromosome is a chromosome that is different in shape, size, and behaviour from…

Q: How many genes are there on chromosome 3?

A: All cellular systems are controlled by proteins. The instruction for the synthesis of proteins is…

Q: How many genes are there present on chromosome 22 ?

A: DNA gets condensed to form chromosomes during cell division. Chromosomes are rod shaped chromatin…

Q: What causes extra chromosomes?

A: Chromosomes are long thread like structures present in the nucleus of all the cells. They carry…

Q: How many chromosomes are in a cell during Anaphase 2 of Meiosis?

A: Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half…

Q: how does reproduction and chromosome transmission relate to each other?

A: Reproduction is a biological process by which organisms produce her offsprings similar to itself and…

Q: How do we know whether two chromosomes are homologous?

A: Homologous chromosomes are made up of chromosome pairs having  Similar length, Similar centromere…

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

A: Gregor Mendel postulated a laws of inheritance ;which are mainly applicable to the eukaryotic…

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 homologous chromosomes? Which are the human cells that do not have homologous chromosomes?

A: Homologous chromosomes are the pair of one maternal and one paternal chromosome with same size and…

Q: How many genes are there present on chromosome 9?

A: The study of genes comes under Genetics. Genes are the structural and functional unit of life. They…

Q: How is mitochondrial DNA different from nuclear DNA?

A: Deoxyribonucleic acid (DNA) is a long molecule. It contains the instructions an organism required to…

Q: What does an extra 22 chromosome mean?

A: Chromosome is the DNA molecule with part or all of the genome (genetic material) of an organism. In…

Q: How many genes are there present on chromosome 12 ?

A: Chromosomes are thread-like structure, which are composed of nucleic acids and protein. They are…

Q: How does chromosome painting work?

A: Chromosome Painting, or FISH (Fluorescence In Situ Hybridization) is the powerful method used to…

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: How many genes are there present on chromosome 10 ?

A: Introduction: Chromosomes are thread-like structures present inside the nucleus of plant and animal…

Q: What are homologous chromosomes?

A: Homologous chromosomes that are also known as homologs, come one from each parent. In other words,…

Q: How do polytene chromosomes of an insect differ from normal chromosomes?

A: Polytene chromosome were first reported by EG balbiani in the year 1881 from the salivary glands of…

Q: How many number of chromosomes in a human gene?

A: Chromosomes can be defined as ribbons of Chromatin material and histone proteins organized in the…

Q: When do homologous chromosomes interact?

A: Homologous chromosomes have the same genes in the same order all the way down their chromosomal…

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: How does mitosis and meiosis ensure that the chromosome number of a certain species remain the same…

A: Genetic discontinuity, which induces cell or organism complications, is the opposite of genetic…

Q: What are the number of chromosomes in mustard weed?

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

Q: What are  duplication chromosomes ?

A: Chromosomal aberrations are changes in the number and arrangement of genes in the chromosomes. They…

Q: How do people get chromosomal rearrangements? What causes chromosome duplication?

A: A chromosome is a thread-like structure present in the nucleus of the cell. It contains the DNA and…

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: Why are changes in chromosome number almost always more severe than changes in chromosome structure?

A: Introduction  Chromosomal aberrations are the common cause of abnormal development of the embryo or…

Q: What are homologous chromosomes? What happens to homologous chromosomes during meiosis?

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

Q: How many genes are there present on chromosome 14 ?

A: Chromosomes are the small structures like a thread situated within the nucleus ofvarious  plant and…

Q: What does the X/Y pair of chromosomes determine in humans?

A: Chromosomes are DNA-carrying structures located in the center (nucleus) of cells. The substance that…

Q: How many genes are there present on chromosome 17 ?

A: A chromosome contains hundreds to thousands of genes. Each ordinary human cell contains 23 sets of…

Q: What is balancer chromosomes? How balancer chromosomes are used ?

A: Chromosomes are DNA-carrying structures located in the center (nucleus) of cells. The substance that…

Q: How does the density of genes found on chromosome 22 compare with the density of genes found on…

A: Humans have 23 pairs of chromosomes. Among them 22 pairs of chromosomes are autosomes and the…

Q: What is known as homologous chromosomes ?

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

Q: In many organisms, including humans, chromosomes occur in homologous pairs; where does each member…

A: In higher organisms, chromosomes occur in homologous pairs. One chromosome of the pair from each…

Q: How many genes are there on chromosome 2?

A: Chromosomes are thread-like structure, which are composed of deoxyribonucleic acid (DNA) and…

Q: How Are the Ends of Chromosomes Replicated?

A: DNA replication is the biological process of producing two identical replicas of DNA from a single…

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.