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strojnjashka [21]
3 years ago
15

An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population happens to have bro

ader stripes, on average, than the initial population. If broadness of stripes is genetically determined, what effect has the ground-squirrel population experienced during the earthquake?
A) directional selection
B) disruptive selection
C) a founder event
D) a genetic bottleneck
Biology
1 answer:
Mariana [72]3 years ago
5 0

Answer:

D) a genetic bottleneck

Explanation:

Genetic bottleneck refers to the sudden reduction in the population size due to some adverse climatic factors such as natural calamities. It changes the allele frequencies since the survivor population mostly have different allele frequencies than the original population.

In the given example, an earthquake kills 98% of the squirrels. The survivor population exhibits different allele frequencies for the gene responsible for the thickness of stripes. Therefore, it represents a genetic bottleneck.

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What do you think could be done to minimizes people’s fears about genetic engineering?
BigorU [14]

Answer:

By comparing the plants and animals we've bred for thousands of years for the perfect amount of food and parts we like. It's possible to create perfect humans, and to make humans immune to disease and genetic disabilities  

Explanation:

8 0
2 years ago
During the action of a sodium-potassium pump, 50 ATP molecules were spent. Predict how many sodium ions are transported across t
julia-pushkina [17]
<span>1 ATP molecule allows 3 Na+ to move out of the cell
and 2 K+ to enter.
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hope it helps</span>
4 0
3 years ago
Name 15 different types of sharks and write one sentance that describe each!
baherus [9]
15 types of sharks:


#1   Hammerhead Shark

#2   Wobbegong

#3   Sand Shark

#4   SawShark

#5   Angelshark

#6   Cat Shark

#7   Cow Shark

#8   Brambleshark

#9   Carpet Shark

#10   Alopias

#11   Carcharhiniformes

#12   <span>Heterodontus
</span>
#13   <span>Squaliformes
</span>
#14   Hexanchiformes

#15   Smooth-hound

Sentences:


#1   A Hammerhead shark is a type of shark that comes from the family, Sphyrnidae. These sharks were named for their head shape, <span>which are flattened and laterally extended into a "hammer" shape.

#2   The Wobbegong shark is known as a type of carpet shark and is </span>found mostly in the shallow temperate and tropical waters of the western Pacific Ocean. As well as in the Eastern Indian Ocean.

#3   Sand Sharks come from the Odontaspididae family. These sharks can be found world wide, and mostly in tropical waters. It can also be known as the Sand Tiger Shark in both the US and in the UK.<span>

#4   The Sawshark has a l</span><span>ong, saw-like rostrum edged with sharp teeth. They use this to slash and disable their prey.

#5   An Angelshark contains a flattened body and wide </span><span>pectoral fins, that offten give them a strong resemblance to rays.

#6   The Cat shark can also be refered to as the Bamboo shark. This species finds comfort in swing very close to the ground.

#7   Cow Sharks belong in the </span><span>Hexanchidae family because of their additional pair of gill sets.

#8   The Bramble shark can be found in the </span><span>eastern Pacific Ocean, and in tropical and temperate waters worldwide.

#9   A Carpet shark can commonly be mistaken for a Wobbegong shark, although they can sometimes be the length of a whale shark.

#10   The Alopias shark can also be known as a Thresher shark and has the ability to</span> <span>inhabit both coastal waters and oceans far from land, from the surface to depths of at least 360 meters.

#11   The </span><span>Carcharhiniformes shark can also be known as a ground shark and they can weigh as much as a Bull shark.

#12   The Heterodontus is a bull shark </span><span>that is a small order of basal modern sharks. </span><span>

#13   </span>Sharks in the Swualiformes family, have two dorsal fins, which usually possess spines.

#14   The <span>Hexanchiform shark has only one dorsal fin and six or seven gill slits. This species is extinct.

#15   The Smooth-Hound Shark is narrow finned and is sometimes referred to as the </span>Florida smooth-<span>hound.


Sorry this took me so long to complete. It was a lot!!

Hope this helps!!</span>
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8 0
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Which of the following is not a potential concern associated with the use of biotechnology?
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<span>The option which is not a potential concern associated with the use of biotechnology is the production yields of GM foods, whereas the other options are quite dangerous when you think about them. Genetic ownership means that somebody could steal your genes and use them for cloning, which is another option here. Trainsgenic foods also have to be kept safe, so as to stop someone from messing with them. The production yields of GM foods is not the problem, the problem is whether that food is healthy or not.</span>
4 0
3 years ago
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