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Lelu [443]
3 years ago
5

What do meninges and the cerebrospinal fluids have in common

Biology
2 answers:
DerKrebs [107]3 years ago
8 0
Meninges and cerebrospinal fluid both protect the brain from physical shock.
Meninges is one of the membranes that engulf the brain .
Cerebrospinal fluid is the fluid that the brain floats in and absorbs shocks. #answerwithquality #BAL
Ahat [919]3 years ago
6 0

Answer: Both are found in the central nervous system that is, the brain and the spinal cord. Both serve as forms of protection and support to the central nervous system.

Explanation: Meninges is a membranous envelope that offers a protective covering to the brain and the spinal cord against trauma. It is made up of three parts: pia mater, arachnoid and dura mater.

Cerebrospinal fluid is a liquid which flows in the space between the arachnoid mater and the pia mater. It serves as a cushion to the brain and the spinal cord against trauma and provides mechanical and immunological protection to the brain.

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Describe how the relative numbers of PDS and NPDs can be used to establish linkage.
Mandarinka [93]

Answer:

Linkage may be defined as the transmission of chromosome to the next generation that are located on same chromosome. Linkage results in the formation of recombination progeny.

PDS (parental ditypes) and non parental diypes can be used to find linkage in the Neurospora and other organism Parental ditypes has the genotype same as parental genotype whereas non parental ditypes contains recombinant progeny. If the ratio and arrangement of PDS and NPDs is 2:4:2 or 2:2:2:2. This means linkage is present between the gene and centromere of an organism.

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3 years ago
Homologous pairs of chromosomes are lined up independently of other such pairs during _____. Homologous pairs of chromosomes are
kvv77 [185]

Answer:

Homologous pairs of chromosomes are lined up independently of other such pairs during <u>metaphase I.</u>

Explanation:

Meiosis is a special type of nuclear division that occurs only in organisms with sexual reproduction. The meyotic division gives rise to gametes.

The division begins just after the chromosome DNA has replicated in the S phase. Each chromosome is made up of two identical sister chromatids joined by their centromere. However, chromosomes are not kept separate in the nucleus, but instead bind to their homologous partners. This union called synapse, occurs during prophase I.

In metaphase I, the pairs of chromosomes are aligned in the spindle Ecuador, that is, during this stage, the homologous pairs are aligned in the metaphase plate (which is the equatorial plane of the achromatic spindle) for separation.

During anaphase I, the members are directed to the opposite poles of the cell. Telophase I, this phase begins with the arrival of chromosomes at the poles and with the formation of a nuclear envelope around each group of chromosomes. During Profase II, the nuclear membrane (if formed during Telophase I) dissolves, and spindle fibers appear.

The first meyotic metaphase and anaphase is usually completed in a short time to give rise to the phases of the second division (metaphase II and anaphase II) , which is a mitosis during which the centromeres divide and the chromatides move towards opposite poles to become gamete chromosomes. In telophase II, cytokinesis separates cells.

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3 years ago
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2 years ago
What role does the cell membrane play in maintaining homeostasis
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4 0
3 years ago
Which of these is a piece of evidence supporting the theory of evolution? The Glyptodon exists in some parts of the world. Emu a
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Answer:

The glyptodon is found to be similar to the armadillo.

Explanation:

A piece of evidence that supports the theory of evolution is that the glyptodon is found to be similar to the armadillo. Glyptodons and armadillos have many things in common, expect that glyptodons are much larger (the size of a Volkswagen beetle!) than an armadillo. The change from the prehistoric glyptodon to our modern day armadillo helps support that there is evolution because they still have many things in common. They are genetically related.

6 0
3 years ago
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