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Pavel [41]
2 years ago
9

When DNA condenses in preparation for cell division, it is called a __________.

Biology
2 answers:
labwork [276]2 years ago
8 0

Answer:

A. chromosome

Explanation:

Chromosomes are typically what you see in a chart like karyotype that shows all the chromosomes of a particular organism. These are the highly condensed structures of DNA during replication which makes it easy to transfer DNA during replication.

nasty-shy [4]2 years ago
7 0

Answer:

A. Chromosome

Explanation:

Each of your 46 cells has a chromosome, which is a very long strand of DNA with a combined length of around 3 meters! The DNA is wound around protein beads known as histones, and then histones are wound together to form larger and larger organized coils. This is done to prevent them from bunching and knotting together as headphones in your pocket used to before we were all wireless. The volumes of this blueprint, if DNA is the blueprint for everything that goes into creating our bodies, are known as chromosomes. Each of them has an extremely long word that can only be formed using four different types of letters (G, A, T and C). Genetic code is the process by which our body decodes a word to determine its meaning in smaller bits and the location of its genes. Genetic sequence is the term used to describe the letter order. The short arm, centromere, and long arm are the three structural components of each chromosome, which can vary in length. When a cell divides, it makes a copy of the chromosome, and the old and new copies are momentarily clipped to one another by their centromeres. The centromere is a particular segment of DNA that plays a crucial function in this process. Additionally, the centromere contains a "reel" connected to it that pulls the chromosome to each of the separated cells during cell division. Because the size of the chromosome arms is never exactly equal, one must be shorter and the other must be longer. Our genes are located in these arms.

The DNA that makes up the blueprints for all of the proteins your body produces is found in the core of each and every one of your cells.

The DNA organizes itself into 46 distinct bundles when a cell is prepared to divide. which, based just on size and the chains of nucleotides that make up the DNA's "ladder" portion, really seems to be 23 separate pairs of bundles (remember, 99.9 percent of all human DNA is identical from person to person, so the DNA you get from your mother looks an awful lot like DNA from your father). Unless you're a man, in which case you have two misaligned chromosomes and 22 pairs of chromosomes (that would be the "X" and the "Y").

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Alexandra [31]

Osmosis is the best term


5 0
3 years ago
How did eukaryotic cells evolve prokaryotic cells?
Lera25 [3.4K]

Answer:

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes (endosymbiosis) is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

Explanation:

Both mitochondria and chloroplasts are similar to bacteria in size, and like bacteria, they reproduce by dividing in two.

3 0
3 years ago
When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited...
tia_tia [17]

Answer:

One allele of tallness form one of the parent and one allele for dwarfness from another parent.

Explanation:

Mendel took two plants one was homozygous dominant(TT) for height trait and the other was homozygous recessive(tt) for height trait. The homozygous dominant individuals was tall and recessive was short.

So when they are crossed during fertilization the offsprings got one allele for tallness from the homozygous dominant parent and one allele for shortness from the homozygous recessive parent.  

       T     T

  t   Tt    Tt

  t   Tt    Tt

So all the offsprings are heterozygous for the height trait that means all the individuals will be tall in appearance as they have one dominant trait for tallness.

8 0
4 years ago
Which class of vertebrates is considered to be the first to develop lungs, allowing them to become terrestrial organisms?
Lyrx [107]

Answer:

Amphibia

Explanation:

8 0
3 years ago
The diagram shows a reflex arc. Name parts P and Q shown on the diagram above.<br> Please help.
Makovka662 [10]

Answer:

P - synapse

Q - Relay neuron

Explanation:

A synapse, easy to remember as a neural junction, is the site where the transmission of electric impulses occurs. This occurs between two neurons or between a neuron and a gland or muscle cell. So in this scenario when we poke the finger it fires an electric nerve impulse that gets to the P spot that is a synapse and gets transmitted to the relay neuron. A relay neuron is there to receive the signal from one neuron and then transfer it to another interneuron resulting in the signal being received by a motor neuron so that we can react to the stimulus.

8 0
3 years ago
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