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homologous chromosomes are chromosomes where both alleles are the same, either both dominant or both recessive.
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At the beginning of cell division DNA and the proteins associated with the DNA coil into a structure called an?
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.
What is a small circular segment of DNA found in many bacteria but separate from the bacterial chomosome?
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.
Identify 3 causes of chromosomal disorders?
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.
What is allopolyploidy?
Allopolyploidy is when a fertile organism has more than two chromosome sets due to two different species interbreeding and combining their chromosomes. Allopolyploids are fertile when they breed with each other but cannot breed with either of their parent species so they are now considered a new biological species. Triticale, a hybrid of wheat and rye, is an allopolyploid with six sets of chromosomes. Amphidiploid is synonymous with alloploid.
Can girls be colour blind?
Yes but it is more likely in males. The reason for this is women have two X chromosomes, and men have one X and one Y chromosome. The gene for color sight is found on the X chromosome. If a woman has a defective gene on her X chromosome, she has another to back it up. If a man has a defective gene on his X chromosome, he does not. Both X chromosomes have to be defective in the same way for a woman to be color blind, which is the reason why it is so rare. Male colorblindness, on the other hand, is quite common because the gene is not necessary and therefore the people with it don't get weeded out of the Gene Pool. If a necessary gene is defective, you die, and it does not get passed on. It has to mutate again.
Is chomosome found in plant or animail cell?
both. chromosomes are made of dna. they carry the genetic information of the cell
How does the structure of DNA allow the molecule to store information?
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
How does the structure of the DNA allow genetic information to be stored?
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 an?
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.
How many of sex chomosome and autosome are in a human somatic cell?
44 autosomes and 2 sex chromosomes are present in human somatic cells .
What is the diploid chomosome number for your karyotype?
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.
What are the specific names of autosomal chromosomes like sex 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 chomosome from his maternal grandfather is?
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.
What happens when the recessive allele is passed on to a boy?
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.
What are chomosome?
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.
What is a small circular segment of DNA found in many bacteria but separate from the bacterial chomosome?
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.
Why is it important for the chomosome to make copies of themselves BEFORE mitosis occurs?
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.
