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Chromosomes
Chromosomes contain the genetic material DNA
1,309 Questions
What is one inheritable characteristic from chromosomes?
Well all of your phenotypes were inherited from the chromosomes that you received from your parents. So everything about you is inherited... All the 'data' a chromosome has is inheritable. The size of your eyes, fingers, head... etc.
What structures holds the duplicated chromosomes together and is also copied during the S phase?
I believe those are called centrioles.
The structure is a centromere.
When the chromosome pair separate and move to opposite ends is called?
The paired chromosomes separate at the kinetochores and move to opposite sides of the cell. This occurs at anaphase.
How many chromosomes are in the house cat somatic cells?
Most cats, including domestic breeds, have 19 pairs of chromosomes for a total of 38.
How crossing over and linkage effect the independent assortment?
Crossing over results in recombination, which effectively cancels out linkage if it takes place between the linked genes. The closer together the two genes are, the less likely this is to occur. One percent recombination equals one MapUnit or one centiMorgan (cf. Nobel laureate Thomas Hunt Morgan) in the mapping of chromosomes. However, the virtual "distance" of genes thus gained is not necessarily directly proportional to their physical distance, as recombinant hotspots are more likely to participate in crossing over than other sites along the chromosome.
What is the significance of chromosome 2 in human evolution?
The evidence strongly supports the concept that chromosome II is the head-to-head fusion of two great ape chromosomes. Since we split from chimpanzees it appears that 24 pairs of chromosomes in the great ape linage became 23 pairs. The genes are very similar and do very similar things. There is telomere material in the center of this chromosome and there are two centromere sites, though one is inactive. This shows quite well are common ancestry with the great apes.
How many pairs of chromosome's do humans have?
There are 23 pairs of chromosomes in the cell, or 46 total. 1 pair of them are sex chromosomes and the rest are called autosomes. There are 50-75 trillion cells in the human body. That means there are about 1,550,000,000,000,000- 1,725,000,000,000,000 pairs of chromosomes in the human body.
The sex chromosomes in human, denoted X and Y, are only truly a pair in females (XX). So some people consider humans to all have 22 pairs chromosomes and 2 sex chromosomes.
Whats the phase of mitosis in which the duplicated chromosomes form an x shape?
In prophase they begin to coil, but they forms the X shape and line up on the metaphase plate during metaphase.
What are two diseases linked to the X chromosome?
One disorder could be colorblindness. Colorblindness is most common in males because in order to have to disorder you must carry two mutated X chromosomes. Another recessive genetic disorder you can get is called Hemophilia. This is a disorder in which the genes for hemoglobin are not present and your body is not able to create blood clots and a simple scratch can be very serious.
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What is the phase where chromation condenses form to chromosomes?
The cell's chromatin condenses into chromosomes during prophase. In contrast, telophase is where the chromosomes loosen to form chromatins.
Why is it important that all regions of chromosomes are not continually active?
It is important that not all regions of chromosomes are continually active to maintain proper gene regulation and cellular function. If all regions were active, it could lead to excessive production of proteins, resulting in cellular stress and potential damage. Additionally, this regulation allows for the differentiation of cells, enabling them to perform specific functions within an organism. Ultimately, controlled gene expression is crucial for development, homeostasis, and response to environmental changes.
