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vladimir1956 [14]
3 years ago
10

Why can only traits controlled by genes be acted upon by natural selection?

Biology
1 answer:
Luda [366]3 years ago
5 0
Traits controlled by genes can only be acted upon natural selection because they have to helpful to the survival of that organism.
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діти з синдромом дауна мають ті ж алелі що і батьки у чому ж тоді причина настільки суттєвих відмінностей у будові та функціонув
Anit [1.1K]

Answer:May you please translate that into english

Explanation:

4 0
3 years ago
3) The oceans and the atmosphere work together through global currents that do what?
belka [17]

Answer:

The correct answer is D)

Cycle energy and matter to support the biosphere as a closed energy system

Explanation:  

The earth as we know it is a closed energy system that is, matter cannot be introduced or removed from it. Sometimes, rare meterites enter into the system with minimal or no disruption.

Also, energy can enter and leave. The energy mostly referenced here is the sun.

Within the earths system, the lithosphere, hydrosphere, and biosphere materials and energy go through a cycle which helps to support life.

For example, water when heated up by the sun rises as vapour from the earth and oceans into the atmosphere where it cools and condenses. When it cools and condenses, it , in the form of rain, comes down on the earth and oceans. As rain falls down to the earth and runs off the rocks, rocks are broken down into smaller fragments and soils.  The hydrosphere comprises of all water bodies on earth. Besides the vapours which are evaporated from the same into the atmosphere, when volcanoes erupt they also send vapourised water into the atmosphere.

So because the earth is a closed system, a change in one sphere effects a change in others. An example is a change in the water cycle.

Cheers

8 0
3 years ago
One difference between a fundamental niche and a realized niches is that
xxTIMURxx [149]

Answer:

Explanation:

Fundamental niche is the entire set of conditions under which an animal (population, species) can survive and reproduce itself. Realized niche is the set of conditions actually used by given animal (pop, species), after interactions with other species (predation and especially competition) have been taken into account

8 0
3 years ago
predict the effect of a mutation that prevents the expression of aurka on a normal (noncancerous) cell
earnstyle [38]

Answer:

Nowadays, if a cell cannot express the AURKA gene, malignant neoplasms or cellular malignancies can be generated.

since it is related to the KRAS gene.

There is some scientific evidence or research that maintains that FOSL1 acts on another gene, AURKA, whose expression to date was thought to be independently regulated by the KRAS oncogene, and for which clinical trials are currently underway with a drug that inhibits it. .

Explanation:

Aurora kinase A also known as serine / threonine-protein kinase 6 is an enzyme that in humans is encoded by the AURKA gene.

6 0
3 years ago
If a cell contains 95% water and is put into a beaker with 100% water, what will happen
Kisachek [45]

Answer: The quantity of water in the beaker will reduce. The cell will increase size.

Explanation: There is difference in water concentration between the cell and the beaker, therefore water will move from the beaker into the cell causing the cell to expand and the quantity of water in the beaker to decrease. There will be movement of water molecules from an area of high water concentration (beaker) to an area of low water concentration (the cell) through a selectively permeable cell membrane. The aim of this is to create an equilibrium between the water concentration in the cell and that in the beaker.

4 0
3 years ago
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