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kondaur [170]
3 years ago
14

What event is important factor in increasing genetic diversity among sexually reproducing organism

Biology
1 answer:
Inga [223]3 years ago
6 0

Answer:

The correct answer would be crossing over.

Crossing over is an important event in which exchange of genetic material between non-sister chromatids of homologous chromosomes takes place.

It occurs during prophase 1 (particularly in pachytene sub-stage) of the meiosis 1.

During prophase 1, the pair of homologous chromosome are aligned in the process termed as synapsis after which they exchange the genetic material at the points of chiasmata.

It results in formation of new combination of alleles in chromosomes which leads to the development of genetic diversity in sexually reproducing organisms.

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Which of the following vertebrates had the chance to become abundant after the dinosaurs became extinct?
k0ka [10]
I believe the answer is C.
because when the dinosaurs thrived they ate most of the mammals which were small animals but when the dinosaurs went extinct the mammals grew larger in size and started to thrive.
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3 years ago
Sally was exposed to hepatitis. Her doctor gave her an injection containing
expeople1 [14]

Answer:

The correct answer is - passive immunity - artificially acquired.

Explanation:

Passive immunity is the immunity that involves giving or acquiring antibodies from other sources instead of developing them on one's own. This type of immunity can be natural and artificial. Mother breastfeed the babies, is the natural passive immunity example as milk also contain antibodies required for immunity of babies.

Artificial passive immunity is the immunity that comes from injecting the antibodies created in different animals or persons which called antiserum or vaccines such as snake antivenom.

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3 years ago
Imagine that a researcher is examining the positioning of synaptic clefts in a region of the nervous system of adult mice. In on
Setler [38]
This is likely a mutant mouse (as synaptic clefts are typically 10 to 20 nm wide). Given that neurotransmitters act over short distances, this mouse may demonstrate delayed responses to stimuli, or no responses at all.



That’s the answer
4 0
3 years ago
Where are the three seismographs used to find the epicenter of this earthquake located?
8090 [49]

Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Every earthquake is recorded on numerous seismographs located in different directions. Each seismograph records the times when the first (P waves) and second (S waves) seismic waves arrive. From that information, scientists can determine how fast the waves are traveling. Knowing this helps them calculate the distance from the epicenter to each seismograph.

To determine the direction each wave traveled, scientists draw circles around the seismograph locations. The radius of each circle equals the known distance to the epicenter. Where these three circles intersect is the epicenter.


7 0
3 years ago
Read 2 more answers
What do ferromagnesian (mafic) minerals have in common? List three examples of mafic minerals?
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3 years ago
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