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Alexus [3.1K]
4 years ago
11

What happens to the chromosomes number during meiosis

Biology
1 answer:
Luda [366]4 years ago
5 0
Meiosis<span> is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.</span>
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You are given two solutions containing different purified DNAs. One is from the bacterium P. aeruginosa and has a G + C composit
bonufazy [111]

Answer:

The solution of P. aeruginosa will yield higher Tm value.

Explanation:

The solution of P.aeruginosa contain 68% G+C composition as a result the DNA of P.aeruginosa is more stable than the DNA of mammal contain only 42% G+C composition.G+C composition is most stable because guanine is linked to cytosine by 3 hydrogen bonds whereas adenine linked to thymine by 2 hydrogen bonds.

   As  P.aeruginosa DNA is more stable than mammalian DNA,as a result the DNA solution of P.aeruginosa will yield high Tm(melting temperature) value than that of mammalian DNA.

4 0
4 years ago
What is all necessary for natural selection to occur?
Luda [366]

<u>Necessary for natural selection:</u>

It is the process in the evolution. It explains the nature and it is responsible for the evolution of adoption in the organisms to their environment. The four types of the natural selection are reproduction, heredity, variation in fitness and the variation in the individual characters among the member in the population.

It is the important factor to analysis the environment and reproduction of the organisms. The offspring are  resemble same as their parent in the natural selection.

6 0
3 years ago
How does variation contribute to evolution?
amid [387]
I believe it's A. If an organism changes and evolves slowly over time it is caused by variation, which helps the species adapt to it's habitat and way of life
5 0
3 years ago
Which sentence correctly describes the relationship between genes and alleles?
kirza4 [7]
D. <span>An allele is one version of a gene. </span>hope this helps.
5 0
3 years ago
Read 2 more answers
Energy in biology falls into two categories. Kinetic energy (aka cellular work) includes solute
GuDViN [60]

Answer:

A. Triglycerides (CiaH36O2l3 store about twice as much energy as polysaccharides (CH2O)

Explanation:

Energy, as stated in this question, can be of two types namely: kinetic energy and potential energy. Kinetic energy is the energy due to motion i.e the energy used to transport solute etc.

On the other hand, potential energy is the energy due to position like the energy stored in the covalent bonds of a molecule. Based on this question, the fact that triglycerides (a type of lipid) store about twice as much energy as polysaccharides (carbohydrate) is evidence that POTENTIAL ENERGY is stored in covalent bonds.

6 0
3 years ago
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