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Neko [114]
3 years ago
6

What causes genetic variation during human sexual reproductive processes?

Biology
1 answer:
Natasha2012 [34]3 years ago
4 0
"Adjacent chromatids in homologous chromosomes cross over during meiosis in sperm and egg formation" is the one among the following choices that describes what <span>causes genetic variation during human sexual reproductive processes. The correct option among all the options given in the question is the second option.</span>
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what does it mean to describe a scientist as skeptical? Why is skepticism an important quality in a scientist?​
grigory [225]
A skeptical scientist is one who questions the reliability of certain kinds of claims by systematically investigating them. it is an important quality in a Scientist because it helps them remain objective when performing scientific injury and research, it also forces them to examine claims to be certain that there is sufficient evidence to back them up
7 0
3 years ago
What are the characteristics of the vertebrate's nervous systems?
Delicious77 [7]

Answer:

Vertebrates contain nervous system which is highly specialized organ.

Explanation:

The nervous system is the complex system in the vertebrate body which is composed of central nervous system that contain brain,spinal cord and peripheral nervous system which contain cranial nerve, spinal nerve,involuntary nerve etc.

The nervous system contain neurons that mainly transmit signal to the different parts of the body.

The peripheral nervous sytem contain somatic and visceral part.

The grey matter and white matter are the 2 areas in vertebrate nervous system.

6 0
3 years ago
Plants are the basis of nearly all ecosystems on Earth because they carry out the process of photosynthesis. Plants harvest ligh
Daniel [21]

Answer:

Trophic level

Consumer

Producer

Explanation:

All living organisms require energy for their life processes, which they obtain by taken in food. In an ecosystem, this food is derived when organisms feed on each other. This process that eventually leads to a flow of energy within organisms is called FOOD CHAIN.

A food chain or food web always begins with a unique set of organisms called PRODUCERS. Producers are autotrophs capable of harvesting light energy from the sun and use it to produce their food (chemical) in a process called PHOTOSYNTHESIS. Other organisms called HETEROTROPHS feed on these producers to derive energy. In ecology, they are called CONSUMERS. Other consumers feed on the previous ones also to get energy.

Hence, each step of the food chain is occupied by organisms that obtain and store energy by feeding on another organism. This step is called TROPHIC LEVEL.

In a nutshell, a PRODUCER (usually plants) starts the food chain/web due to its photosynthetic ability. This producer gets eaten by an organism called CONSUMER and in the process, the energy and nutrient stored in the producers flows to the consumer. Another consumers feeds on the previous one and the energy keeps flowing. Each step of the food chain occupied by an organism that stores and transfers this energy is called TROPHIC LEVEL.

4 0
3 years ago
2. The statement "the worm is 2 cm long" is a(an)
Ber [7]

Answer:

Quantitative observation

3 0
3 years ago
Read 2 more answers
Cell enlargement and division
Usimov [2.4K]
I don't know what your question is right here..? But cell division is when one cell copies DNA to make an exact copy to which the cell splits resulting in two daughter cells
8 0
3 years ago
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