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Some of the portions of the chromatin are permanently condensed so that their DNA is never expressed All of these portions stain very intensely and are given a common name of?
These condensed portions of chromatin are called heterochromatin. They are tightly packed regions of DNA that are typically transcriptionally inactive, meaning the genes within them are not actively expressed. Heterochromatin appears densely stained under a microscope due to its tight packing of DNA.
The coding regions of a gene the portions that are expressed as polypeptide sequences are called?
exon
What is a process in which homologous chromosomes exchange portions of their chromatids during meiosis?
The process is called crossing over or genetic recombination. It results in genetic diversity by shuffling genetic information between homologous chromosomes, leading to unique combinations of genes in the offspring.
DNA need to change periodically from a long double-helix chromatin molecule into a tightly wound-up chromosome?
When the DNA is an open chromatin molecule, portions of it are actively being transcribed by mRNA. The cell will then be using those instructions to manufacture amino acid chains and proteins. When the DNA winds up into a condensed chromosome it is preparing for mitosis, which would be very difficult to occur if the DNA were all stretched out.
What happens in the tetrad stage?
During the tetrad stage of meiosis, homologous chromosomes line up in pairs and exchange genetic material through a process called crossing over. This increases genetic variation in the daughter cells. Subsequently, the pairs of homologous chromosomes separate and move to opposite poles of the cell during meiosis I.
Some of the portions of the chromatin are permanently condensed so that their DNA is never expressed All of these portions stain very intensely and are given a common name of?
These condensed portions of chromatin are called heterochromatin. They are tightly packed regions of DNA that are typically transcriptionally inactive, meaning the genes within them are not actively expressed. Heterochromatin appears densely stained under a microscope due to its tight packing of DNA.
What happends when corresponding portions of chromatids on two homologous chromosomes change places?
crossing over.
The coding regions of a gene the portions that are expressed as polypeptide sequences are called?
exon
Are exposons the portions of DNA molecules that code for the production of proteins?
Exons are what are expressed while introns are spliced out.
What is homologous chromosomes frequently exchange portions of their DNA called?
It's called crossing over, and it generally only happens between homologous chromosomes.
What is a process in which homologous chromosomes exchange portions of their chromatids during meiosis?
The process is called crossing over or genetic recombination. It results in genetic diversity by shuffling genetic information between homologous chromosomes, leading to unique combinations of genes in the offspring.
The diagram below illustrates which type of chromosomes that may cross over and exchange portions of their chromatids during meiosis?
what type of cell has two sets of chromosomes
When corresponding portions of chromatids on two homologous chromosomes change places what has occured?
This is called genetic recombination or crossing over. It results in the exchange of genetic material between homologous chromosomes during meiosis, leading to genetic diversity in offspring.
What crosses over during crossing over?
Each chromatid can synapse with any one it want/chooses.
What do chromosome contain?
Chromosomes contain DNA, which carries the genetic information that determines an organism's traits and characteristics. They also contain proteins that help in regulating gene expression and packaging the DNA into a compact structure.
What is 11 sixteenths?
11 sixteenths is a fraction that represents the value of 11 divided by 16. In decimal form, it is approximately 0.6875. This fraction can also be expressed as a percentage, which is 68.75%. It is often used in measurements or when dealing with portions in various contexts.
Which is better Counting Calories or Counting Portions?
Counting calories and watching portions.
