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Fudgin [204]
2 years ago
4

You are maintaining a small population of fruit flies in the laboratory by transferring the flies to a new culture bottle after

each generation. after several generations, you notice that the viability of the flies has decreased greatly. recognizing that small population size is likely to be linked to decreased viability, the best way to reverse this trend is to
Biology
1 answer:
yKpoI14uk [10]2 years ago
3 0
Cross your flies with flies from another lab 
change the temperature at which you rear the flies
transfer only the largest flies
reduce the number of flies that you transfer at each generation
<span>shock the flies with a brief treatment of heat or cold to make them more hardy</span>
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A researcher is studying a population of mutant fibroblasts that fail to flatten and attach to extracellular matrix proteins on
Vladimir79 [104]

Answer: Components of cell junctions

Explanation:

<u>Fibroblasts are cells located in the dermis,</u> responsible for the formation and remodeling of tissue. They synthesize fibers and maintains the extracellular matrix of the tissue of animals. So, t<u>he extracellular matrix is a structurally complex entity that surrounds and supports the cells found in tissues</u>.

A cell junction a structure that exists within the tissues of animals and they consist of protein complexes that provide contact between cells or between a cell and the extracellular matrix. So if the cells do not appear flattened and do not attach to the extracellular matrix, then there is a problem with the components of cell junctions, which are mostly proteins as it was said before. And since proteins are coded by genetic information stored in DNA, then if there is a mutation in any of those genes, the fibroblast will fail to attach because the protein of the cell junction will be abnormal.

6 0
2 years ago
Several groups of researchers were conducting experiments to study how exercise affects cholesterol levels. One group had colleg
Vesnalui [34]

Answer:

Design more studies testing the effect of duration and intensity of exercise on cholesterol levels in different age groups.

Explanation:

4 0
2 years ago
The pmi for remains of a body enclosed in a plastic bag could best be estimated by
scoundrel [369]
The post mortem interval of a body enclosed in a plastic bag could be best estimated by the insects found in the body, in that case forensic science need to listen to what those little creatures have to say, insects could tell if the body has been moved from the crime scene, how long it´s been in an specific place, and how long it´s been since death until found, every group of insects can tell something different, from worms, arachnids to flyes, each one of them has a time to get into the body, so it could tell you for how long it´s been dead.
5 0
2 years ago
Explain two ways in which the lens is structurally suited to perfrom its function
horsena [70]
The function of the lens is that it allows light rays to focus into the retina. They are composed of fluids that contains lots of nutrients for the lens to gain from it and cleanses dirt if it comes in contact the eye. Overtime, this lens, will slowly degrade as its fluid will start to lose.
5 0
2 years ago
Hotspots are plumes of magma that originates deep below the ______. with respect to overlying plates, these plumes can remain __
rusak2 [61]

The hotspots are regions, where the plumes of magma are present just below the lithosphere. The plume of the magma is the particles of the volcano and the gases, which is erupted during the volcanic eruption. It is generated by the fragmentation of the magma. Once, it reaches the lithosphere, it get spreaded laterally.

The plumes at the hotspots are present just below the tectonic plates, a high temperature r heat and the low pressure causes the rocks present in the lithosphere to melt resulting in volcanic eruption. At hotspot, the melting of rock takes time, sometimes it is very slow, due to the presence of various tectonic plates. Hence, the plumes can remain stationary for a very long period of time without erupting.

So, the first blank can be filled with Lithosphere and the second blank can be filled with Stationary.

7 0
2 years ago
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