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lions [1.4K]
3 years ago
14

Explain how "crossover" creates genetic variety of sex cells

Biology
1 answer:
Novay_Z [31]3 years ago
7 0

Answers:

Explanation:

Gametes are often called sex cells, unite with other sex cells produce unique organisms. Genetic Variation occurs during meiosis in WHICH homologous chromosome pair and exchange non-sister chromatid segments (crossover)

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Describe the process of cell division
Nookie1986 [14]

Answer:

it is the process where new cells are formed called as daughter cells from a single cell

8 0
3 years ago
What impacts do you think the burmese pythons might have on local ecosystems
Angelina_Jolie [31]
It could possibly be a endangerment to children and elders
4 0
3 years ago
What are the two ways that organisms on the bottom of deep sea food chains acquire energy? a. photosynthesis and chemosynthesis
aliina [53]

The correct answer is (B)  chemosynthesis and marine snow  are the two ways that organisms on the bottom of  deep sea food chains acquire energy.

What is the meaning of chemosynthesis and marine show?

Chemosynthesis is the utilization of energy supplied by inorganic chemical processes to make food in bacteria and other organisms. To generate a sugar, all chemosynthetic organisms require energy provided by chemical processes, although various species employ different methods.

Marine snow is a shower of biological particles that falls from the upper ocean to the deep sea.  Marine snow refers to biological material that descends from higher in the water column. Some flakes fall for several weeks before reaching the ocean floor.

Learn more about chemosynthesis and marine snow refer:

brainly.com/question/4821668

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7 0
2 years ago
The above diagram suggests that A. there are more tertiary consumers than producers in an energy pyramid. B. producers are the f
Likurg_2 [28]

Answer:

I would have to say B is correct.

Explanation:

in a food pyramid the base is always producers.

6 0
3 years ago
Read 2 more answers
Limestone is a rock formed from calcite. Calcite can be easily dissolved by acids. Marble is a rock formed from limestone. There
Umnica [9.8K]

Answer:

All of these are correct

Explanation:

According to the question, marble is a rock formed from limestone, which in turn is also formed from Calcite. This shows that marble is a kind of metamorphic rock because a metamorphic rock is any rock that is formed by the alteration of other rocks caused by heat, pressure or chemicals etc. These changes that occurs in the previously existing rocks are called METAMORPHOSIS.

Hence, since marble is formed from limestone, it concludes that marble is a metamorphosed rock formed from a previously existing limestone rock. Also, since Calcite, a precursor of limestone that marble is formed from can be degraded by acids, both limestone and marble which are formed from it will also be dissolvable by acids.

8 0
4 years ago
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