Answer:
sperm cell contains the x or y
Explanation:
please give brainliest
Answer:
Repair mechanism for base cleavage (BER)
Explanation:
Repair by base cleavage (BER)
The altered bases are specifically recognized by glycosylases and removed, generating an AP site. The hole is filled by a DNA polymerase that takes the healthy strand as a template. This system arises not only by exposure to external agents, but also by the cell's own activity.
In case of damage in more than one nucleotide, repair by nucleotide excision (NER) is performed.
Nucleotide excision repair (NER)
The damaged area is recognized by UvrA and B, then A and B separate and UvrC enters which forms a complex with endonuclease activity with B. This enzyme cuts the T-dimer and the gap is filled by a DNA polymerase. There is also the TC-NER system (transcription-coupled nucleotide repair system). The alteration of these mechanisms gives rise to diseases such as: Xeroderma pigmentosum, Trichotiodystrophy or Cockayne Syndrome
Answer:
The sun gets its energy from the process of nuclear fusion. This process occurs in the sun's core or interior, where temperature and pressure are extremely high. During most of the sun's life, energy comes from the fusion of hydrogen nuclei
Explanation:
Answer:
Embryo
Explanation:
An embryo refers to the early stage of development of a multi-cellular organism and it occurs just immediately after fertilization. This development often continues through the formation of cell, tissues, organs.
An embryo is formed from the fertilization of a female ova by a male sperm.
<h2>
Correct Answer is (D)</h2>
Explanation:
(D) distinguishes among microorganisms based on some enzymatic or metabolic ability.
- <em>The prokaryotic microorganisms incorporate the microscopic </em>organisms and the archaea (or the eubacteria and archae bacteria, by more seasoned phrasing).
- The eukaryotic microorganisms incorporate the protists (protozoa), the parasites and in any event the <em>unicellular algae.
</em>
- Mycoplasma genitalium, a parasitic bacterium which lives in the <em>primate bladder, squander removal organs, genital, and respiratory tracts,</em> is believed to be the littlest known life form fit for free <em>development and multiplication. </em>
- Microscopic organisms that expect oxygen to develop are called <em>obligate aerobic bacteria</em>
