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Archy [21]
3 years ago
6

Gene expression in eukaryotes can be regulated at various levels. Certain mutations in flies may cause them to develop an extra

set of legs or wings.
A. Small Interfering RNA B. Operons C. Hox Genes, which determine the formation and arrangement of body parts in multicellular organisms, control gene expression by regulation of A. Pre mRNA Splicing B. mRNA Degradation C. DNA description.
NextReset
Biology
2 answers:
choli [55]3 years ago
4 0

The right answers are: C. Hox Genes and C. DNA description (it's better to say transcription).

Hox genes are among the most extensively studied genes in evolutionary biology. Hox genes are a special category of homeotic genes. The homeotic genes have a DNA sequence described as homeotic or homeobox. Moreover their name, "Hox", comes from the contraction of "homeobox".

The homeobox will encode a homeodomain in translated proteins. These proteins are transcription factors (type of genetic regulatory protein) that, thanks to their homeodomain with a particular conformation, allows them to bind strongly to the DNA and allows cascade activation of other genes.

vekshin13 years ago
3 0
Hox genes are also called Homeotic genes.  In which they act as dictators on specific areas of an organism's body on when or where it should be developed. When these genes are overactivated or inactivated it may cause genetic disorders.
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Answer:

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7 0
3 years ago
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In the figure, what does letter "B" represent?​
Genrish500 [490]

oral groove because of the placement..

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4 years ago
1.What is the difference between evaporation and transpiration? What role does each process play in the water cycle?
anygoal [31]
1. Evaporation is the escape of water molecules from their liquid phase to gas phase that go up into the atmosphere. Evaporation can occur anywhere where open liquid water is exposed to sunlight or any other source of energy. Transpiration, on the other hand, is the loss of water (by evaporation) from plants through the stomata. Evaporation and transpiration move water from the biosphere to the atmosphere.

2. Condensation is the return of water molecules from gaseous phase (vapor) back to liquid form. Precipitation, on the other hand, is the coming down of condensed water from the atmosphere to the earth (biosphere), which is a significant part of the water cycle.

3. Exchange pool is the pool from (or approximate amount) which water or other elements are shared (back and forth) between different spheres (such as biosphere, atmosphere, and hydrosphere) in a cycle. A reservoir on the other hand is analogous to a ‘container’ that holds large masses of water or other elements such as a lake and the atmosphere.

4. The answer is No. because, today’s waters, due to increased pollution from industrialization that spews a lot of pullutans into the atmphere, ae contamiated. The water that precipitates is tainted by gases such as sulphuric dioxide tha makes it acidic. The water also gets polluted by other pollutants in the atmpshre and biosphere and hence become a health risk to animals and humans that drink it.
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3 years ago
Question 1
ss7ja [257]
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3 years ago
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If the inner mitochondrial membrane were freely permeable to h+, atp production by atp synthase would __________. See section 3.
Rina8888 [55]

Answer;

ATP would not be produced by oxidative phosphorylation.

If the inner mitochondrial membrane were freely permeable to h+, ATP production by ATP synthase through oxidative phosphorylation would not occur.

Explanation;

-Oxidative phosphorylation is the process in which ATP is formed as a result of the transfer of electrons from NADH or FADH 2 to O 2 by a series of electron carriers.This process, which takes place in mitochondria, is the major source of ATP in aerobic organisms.

-Oxidative phosphorylation is made up of two closely connected components: the electron transport chain and chemiosmosis. The electron transport chain forms a proton gradient across the inner mitochondrial membrane, which drives the synthesis of ATP via chemiosmosis.

-Therefore; If the inner mitochondrial membrane were freely permeable to h+, ATP production by ATP synthase through oxidative phosphorylation would not occur.

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4 years ago
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