Chromosomes are organized structures of DNA and proteins that are found in cells. A chromosome is a singular piece of DNA, which contains many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions. The word chromosome comes from the Greek χρῶμα (chroma, color) and σῶμα (soma, body) due to their property of being stained very strongly by some dyes.
it is made up by chomosomes which is the dna sequence and takes place in every cell you have. but if one of the chomosome is missing it can make the person mutate
44 autosomes and 2 sex chromosomes are present in human somatic cells .
The diploid chromosome number for humans is 46, which consists of 23 pairs of chromosomes. Each pair includes one chromosome inherited from each parent. This karyotype is typical for most somatic cells in the human body, while gametes (sperm and egg cells) contain half the number, or 23 chromosomes.
Y chromosome is autosomal dominant chromosome. When it is present, the sex of the child is male. When both the chromosomes are X, then the sex of the child is female. X chomosome is called as autosomal recessive chromosome.
Based on your history, you are probably talking about colorblindness, which is a disease inherited on the X chromosome. When it is passed on to a boy, the recessive allele shows itself because boys only have one X chromosome. Edited answer: Though recessive alleles do not express but if it adds to a deficiecy it is reflected in the boy, because only one X chromosome in present there, the other being Y chomosome which is almost enert.
both. chromosomes are made of dna. they carry the genetic information of the cell
it is made up by chomosomes which is the dna sequence and takes place in every cell you have. but if one of the chomosome is missing it can make the person mutate
it is made up by chomosomes which is the dna sequence and takes place in every cell you have. but if one of the chomosome is missing it can make the person mutate
At the beginning of cell division, DNA and the proteins associated with the DNA coil into a structure called a chromosome. Chromosomes are visible under a microscope and contain the genetic material (DNA) of an organism.
44 autosomes and 2 sex chromosomes are present in human somatic cells .
The diploid chromosome number for humans is 46, which consists of 23 pairs of chromosomes. Each pair includes one chromosome inherited from each parent. This karyotype is typical for most somatic cells in the human body, while gametes (sperm and egg cells) contain half the number, or 23 chromosomes.
Y chromosome is autosomal dominant chromosome. When it is present, the sex of the child is male. When both the chromosomes are X, then the sex of the child is female. X chomosome is called as autosomal recessive chromosome.
The probability that a male inherited his Y chromosome from his maternal grandfather is 0%. This is because males inherit their Y chromosome exclusively from their father, who passes it down from his own father (the paternal grandfather). The maternal grandfather contributes to the genetic makeup of his daughter's offspring through the X chromosome, not the Y chromosome.
Based on your history, you are probably talking about colorblindness, which is a disease inherited on the X chromosome. When it is passed on to a boy, the recessive allele shows itself because boys only have one X chromosome. Edited answer: Though recessive alleles do not express but if it adds to a deficiecy it is reflected in the boy, because only one X chromosome in present there, the other being Y chomosome which is almost enert.
A small circular segment of DNA found in bacteria, separate from the bacterial chromosome, is called a plasmid. Plasmids can carry non-essential genes that may provide advantages such as antibiotic resistance or the ability to metabolize certain nutrients. They can be transferred between bacteria through processes like conjugation, allowing for the spread of genetic traits.
It is important for chromosomes to make copies of themselves before mitosis to ensure that each daughter cell receives a complete set of genetic information. The copied chromosomes, known as sister chromatids, are then separated during mitosis to ensure equal distribution of genetic material to the two daughter cells. This process helps maintain genetic stability and prevents loss of important genetic information.
Chromosomal rearrangements, such as deletions, duplications, inversions, and translocations, can lead to chromosomal disorders. Errors in meiosis during gamete formation can result in abnormal chromosome numbers, such as trisomy (three copies) or monosomy (one copy). Exposure to environmental factors, such as radiation or certain chemicals, can increase the risk of chromosomal abnormalities.