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Bas_tet [7]
3 years ago
11

Fertilization occurs when _____.

Biology
2 answers:
kicyunya [14]3 years ago
8 0
Two gametes come together and chromosomes combine
AleksandrR [38]3 years ago
5 0

Answer:

two gametes come together and chromosomes combine is the correct answer

Explanation:

Fertilization occurs when the haploid gametes are fused to form a zygote.

In human The male sperm fuse with female egg to give rise to a diploid cell inside the women's body in the Fallopian tube.

The sperm and egg have a half number of the chromosome, and they are haploid they have chromosomes (single set), and when they fuse to form a zygote,chromosome combine and Zygote has two sets(23pairs) of the chromosomes.

Thus fertilization is a process which occur when two gametes come together and chromosomes combine.

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Beneficial genetic (DNA) mutations are result in individuals with special characteristics that allow them to survive better in the environment so they pass their genes to the next generation.

Here's a fictional example I made just for you!: Lets say you have an alien species called Hibas. They are jelly blobs that float around, don't move, and open their mouths to capture neon shrimps that happen to swim into their mouths. But one day a certain Hiba developed some muscles through a genetic mutation. It was able to "wiggle" through the water and steer itself instead of floating around. This allowed it to eat more neon shrimp than the other Hibas, so it grew faster and was able to reproduce faster. It's kids also had muscles and had an advantage so they reproduced faster then the other Hibas. Eventually the whole Hiba species started to have muscles because the ones that didn't weren't able to compete and did not survive as well. 
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3 years ago
Tracey was learning about structural organization in animals. What level of structural
bearhunter [10]

Answer:

A

Explanation:

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4 0
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This is part of the autonomic nervous system that functions to conserve body resources and maintain homeostasis ("rest and diges
denpristay [2]

Answer:

Parasympathetic nervous system

Explanation:

The parasympathetic nervous system of the autonomic nervous system is activated to restore the body's energy level after the emergency conditions. This division of the autonomic nervous system triggers the digestion and absorption of nutrients so that body cells obtain and conserve energy.

Some of the responses generated by activated parasympathetic division are increased activity of glands associated with the digestive system and increased the contraction of smooth muscles of the digestive tract. The parasympathetic nervous system also slows down the responses required for physical activities such as heart rate and breathing rate.  

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CaHeK987 [17]
<span>organisms cannot adapt faster than rates of extinction</span>
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The reason why humming birds need long beaks is to be able to get the nectar from the flowers, kind of like how we need straws to drink out of to go cups. Humming birds also have very long tongues that also help this process. Since humming birds beaks help them get the food they need, it makes them more successful in their environment. 
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