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How is DNA different from chromosomes and genes?
chromosomes are thread like structures which contain the hereditary material i.e; genes on it.
Are genes a length of DNA?
Yes, a gene is a complex length of DNA that is in our body. A gene is a length of DNA that codes for a living life form. Genes are found on chromosomes which are in the body nucleus.
Which of the following statements regarding cDNA libraries is false?
a. They are usually double stranded DNA. b. They are composed of DNA synthesized with the use of reverse transcriptase. c. They are composed of DNA synthesized from an mRNA template. d. They contain introns and exons. e. They contain DNA that is complementary to the mRNA from which it was synthesized.
How is a cell's DNA like books in a library?
Supposes a small town has a library with a few thousand book. If more people move into town, the town will get larger. There will be more people borrowing books, amd sometimes people may have to wait to borrow popular titles. Similarly, a larger cell would have to make greater demands on its available genetic "library." In time, the cell's DNA would no longer be able to serve its increasing needs of the growing cell.
What is the important event during phropase 1?
During prophase I of meiosis, an important event is the process of synapsis, where homologous chromosomes pair up closely along their lengths to form tetrads. This pairing facilitates genetic recombination through crossing over, where segments of DNA are exchanged between non-sister chromatids, increasing genetic diversity in the resulting gametes. Additionally, the nuclear envelope begins to break down, and spindle fibers start to form, preparing the chromosomes for separation.
Is genes are larger than chromosomes true or false?
False. Chromosomes are larger than genes. Chromosomes are structures within cells that contain many genes, which are segments of DNA that code for specific traits or functions. In essence, chromosomes are made up of DNA, which includes multiple genes along their length.
Crossing-over is the exchange of reciprocal segments of DNA between homologous chromosomes true or false?
It's true that crossing over is the exchange of reciprocal DNA parts between homologous chromosomes.
True or false In eukaryotic chromosomes DNA replication begins at a single point in the chromosome and proceeds in two direction?
It's true, it's in the book
Is iit true or false that our sex cells have the same amount of dna in as your heart cells?
That is false. All body cells, including heart muscle cells have 46 chromosomes. Sex cells have 23 chromosomes.
Genes on chromosomes are the units of inheritance. true or false?
True. Genes are specific sequences of DNA located on chromosomes that contain the instructions for building proteins, which ultimately determine an organism's traits. These genes are passed down from one generation to the next, making them the units of inheritance.
Is it True or false that chromosomes which carry genes are found in the nucleus of the cell?
True. Mitochondria contain their own DNA - and the chromosomes present in mitochondria are much smaller than those found in the nucleus (they are much more similar to Prokaryotic chromosomes). Mitochondrial DNA is not involved in the central processes of the cell.
If the DNA duplicates do the chromosomes duplicate?
True
Genes are arranged on twisted strands called what?
Genes are arranged on twisted strands called DNA. DNA is housed in the nucleus and controls the cells functions and systems.
How is DNA arranged in the human genome and why 24?
DNA in the human genome is arranged into 24 distinct chromosomes. It is because of DNA's natural structure. DNA is composed of nucleic acids and it looks like a twisted ladder or a double helix.
If DNA duplicates the chromosomes do not necessarily duplicate.?
True
True or false all DNA codes for protein?
true
True or False The nucleus contains very little of the cells DNA?
No - quite the opposite. The nucleus is where almost all of the DNA in a cell is found. Small amounts are also found in some organelles, such as mitochondria - and this is the only form of DNA found outside the nucleus.
