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Feliz [49]
3 years ago
12

Question 23

Biology
1 answer:
mojhsa [17]3 years ago
7 0
<h2>Answer:</h2>

<u>Atom</u> is the primary as well as smallest unit of element.

<h2>Explanation:</h2>

Atoms are the tiny blocks that build elements. They are composed of proton, electron, and neutron. The electron is negatively charged, protons are positively charged, and neutrons are devoid of any charge.

The atom present in the elements combine with one another and leads to the formation of molecules. The property of the atom remains unchanged even after involved in formation of new molecules. When two atoms combine together it is called as molecules.

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Why do birds have thick chest muscles​
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These muscles promote good control of the downstroke and upstroke movements of the wings for flight. It allows them to make powerful strokes and this leads to smoother gliding during flight.

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Which is an example of a decomposer?<br> A a hawk<br> B a mouse<br> C a flower<br> D a mushroom
Svet_ta [14]
D a mushroom is the right answer fungi are types of decomposers and mushrooms are fungi
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How long ago did homo sapiens appear
GuDViN [60]
About from <span>1.8 to 1.3 million years ago,</span>
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3 years ago
Eukaryotic chromosomes contain two general domains that relate to the degree of chromatin condensation. These two regions are _
GuDViN [60]

Answer:

This question lacks options, options are: A) Heterochromatin and euchromatin

B) Uniform in the genetic information they contain

C) Separated by large sketches of repetitive DNA

D) Each void of typical protein-coding sequences of DNA

E) Void of introns.  

The correct answer is A.

Explanation:

The chromatin or substance that makes up the nuclei of cells and that results from the interaction of DNA with histonic and non-histonic proteins and RNA; it can present different degrees of packing or contraction. When chromosomes are stained with chemicals that bind to DNA, densely stained regions and less densely stained regions appear. Heterochromatin are segments of the chromosome that stain strongly and remain visible, practically, during the entire cell cycle. There are few genes in these regions and therefore low transcriptional activity. They are supercondensed regions. Euchromatin are segments of the chromosome that are not visible during telophase and interphase, only in metaphase. It corresponds to regions that are less compact and in which there is a higher gene density.

3 0
2 years ago
______ are chromosome sequences in which multiple genes contribute to a quantitative trait.
bagirrra123 [75]

Answer:

QTL or Quantitative Trait locus

Explanation:

QTL or Quantitative Trait locus are chromosome sequences in which multiple genes contribute to a quantitative trait.

QLT is a locus that correlates with variation of quantitative trait in the phenotype of the population of an organism. It is an statistical method that links two type of information phenotypic and genotypic data in an attempt to explain the genetic variation in complex trait.

4 0
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