chromosomes are heredity carrier. why do we say so?
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Answered by
68
Hi friend,
Chromosomes are the thread like structures heredity nucleus which carry hereditary information.The number of chromosomes are fixed for a particular species like humans have 46 chromosomes in 23 pairs.First 22 pair of chromosomes are called AUTOSOMES and the 23rd pair is called sex chromosomes as it helps in sex determination.Chromosomes can be seen rod like only when the cell is about to divide else they are always seen entangled mass of thread like structures.
Chromosomes are called heredity carrier because it has genes which carry genetic material called DNA(DioxyRibo nucleic acid).Genes are the units of inheritance in living organisms.It controls the transfer of heridatory characters from parents to offsprings(new born).
Hope it helped you out...................
Chromosomes are the thread like structures heredity nucleus which carry hereditary information.The number of chromosomes are fixed for a particular species like humans have 46 chromosomes in 23 pairs.First 22 pair of chromosomes are called AUTOSOMES and the 23rd pair is called sex chromosomes as it helps in sex determination.Chromosomes can be seen rod like only when the cell is about to divide else they are always seen entangled mass of thread like structures.
Chromosomes are called heredity carrier because it has genes which carry genetic material called DNA(DioxyRibo nucleic acid).Genes are the units of inheritance in living organisms.It controls the transfer of heridatory characters from parents to offsprings(new born).
Hope it helped you out...................
Answered by
21
(1) The genes are situated on chromosomes, these places on chromosomes where genes are located are called loci(singular locus)/
(2) Genes are composed of polynucleotide chains of DNA.
(3) DNA contains the codes of information for synthesis a certain specific protein which governs the expression of a trait.
(4) During gametogenesis, due to Meiosis, the number of chromosomes are halved in sperm (male gametes) and in ova (female gametes).
(5) During Fertilization, the zygote is formed by the Union of sperm and ovum.The number of chromosomes in zygote becomes Deploid.
(6) This zygote containing Deploid set of chromosomes,One from Male gamete and one from Female gametes, will grow into embryo and the next generation is formed..
In this way, we can say that the chromosomes made up of genes,of DNA are passed on from parental generation to the next generation and As Chromosomes carry genetic information So is proved that Chromosomes are the carrier of heredity.Hope it will help.
(2) Genes are composed of polynucleotide chains of DNA.
(3) DNA contains the codes of information for synthesis a certain specific protein which governs the expression of a trait.
(4) During gametogenesis, due to Meiosis, the number of chromosomes are halved in sperm (male gametes) and in ova (female gametes).
(5) During Fertilization, the zygote is formed by the Union of sperm and ovum.The number of chromosomes in zygote becomes Deploid.
(6) This zygote containing Deploid set of chromosomes,One from Male gamete and one from Female gametes, will grow into embryo and the next generation is formed..
In this way, we can say that the chromosomes made up of genes,of DNA are passed on from parental generation to the next generation and As Chromosomes carry genetic information So is proved that Chromosomes are the carrier of heredity.Hope it will help.
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