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Lorico [155]
3 years ago
11

Which genetic variation occures during fertilization when the egg and sperm meet?

Biology
1 answer:
Zina [86]3 years ago
3 0
Answer: crossing over

during the process of fertilization, a sperm and egg join together to create a zygote. since a sperm had half the number of chromosomes and an egg has half the number of chromosomes, when they join together the zygote had a complete diploid set of chromosomes. the assortment of chromosomes and crossing over promotes genetic variation during the process of reproduction
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members of the gram-negative genera aquifex and hydrogenobacter are hydrogen-oxidizing bacteria. an example of their metabolism
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Gram-negative genera Aquifex and hydrogenobacter stand for "water-maker"  to indicate hydrogen oxidation and terminal electron transfer to oxygen. They are chemoautotrophs, that share the ability to oxidize H₂ and fix CO₂ to provide energy and synthesize cellular material. Applicatated for resource recovery and pollution removal.

They are known to grow at the highest temperature and grow usually at neutral or slightly acidic pH. These microorganisms use CO₂ assimilation pathways. They are metabolically versatile chemolithoautotrophs, using reductive tricarboxylic acid (rTCA) cycle.

Learn more about Gram-negative bacteria here brainly.com/question/1194544

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4 0
1 year ago
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Answer:

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Explanation:

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7 0
3 years ago
Which of these cells contain spirals of lignin?
Sidana [21]

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d. Xylem cells

Explanation:

6 0
2 years ago
A frog captures and consumes a fly. Which example of the characteristics of life is most similar?
Gekata [30.6K]
The best answer would be E.
Both are examples of food consumption:)
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3 years ago
Read 2 more answers
Question 1/4
OlgaM077 [116]
I believe the answer is A
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