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kherson [118]
3 years ago
5

4. Distinguish between the types of scientific

Biology
1 answer:
KonstantinChe [14]3 years ago
3 0

Answer: Descriptive, Comparative and Experimental (which comes from experimentation).

Explanation:

There are three types of scientific investigations:

  • Descriptive: This type of scientific investigation studies parts of a system, which can be natural or artificial. <u>It describes everything that is being studied and no predictions are made</u>. There are three types of descriptive methods: case-study methods (an in-depth study is produced from many sources with different methods), observational methods (no questions asked, just an observation of the behavior of a subject and no manipulation of the variables), and survey method (some people are interviewed and the researchers study the answers.)

  • Comparative: <u>It gathers information from organisms, systems, places or from any source, to compare them</u> using also a control group. But, there is no imposed treatment because it is not ethical or because it is not possible. So, the treatment is only observed.

  • Experiment: As its names says, <u>it uses an experimental test designed to study some phenomena, where variables are controlled</u> so the treatment is not only observed as the comparative method. Then those variables are measured to collect information or evidence that supports or not a previous hypothesis and is used to assess theoretical knowledge. The independent variable is manipulated while the dependent variable is measured. This type of scientific investigation comes from experimentation.
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When it comes to something like food preferences, how do genetics and the
k0ka [10]

1. Genetics and environment influence the trait as it depends upon the adaptation made according to availability and environment.

2. Traits are passed onto either parents after fertilization when 2 genes from either parent is received.

3. Dominant trait is responsible for the phenotype of the individual.

4. The expression of gene is seen by the phenotype expressed depending upon the environmental factors.

Explanation:

The food preferences are based on the traits adapted over the time for digestion and method of eating due to natural selection. The occurrence of beneficial trait for digestion become common in the population as these traits are transferred for better survival and evolution.

The traits in an organism is passed on from parents. During fertilization one allele from each parent is passed onto the progeny. 2 alleles together are called gene. In the process of meiosis only one chromosome is present in germ cell hence no homologous chromosome thus only one allele for the trait is present in each parent.

The alleles of dominant trait mask the effect of recessive alleles during phenotype expression. According to law of complete Dominance the dominant trait gets expressed and recessive trait do not get expressed.

The temperature, external environment, chemicals, light factor, diet etc influences the expression of genes in certain organisms. The effect of these can be seen on the phenotype of the organism.  

8 0
3 years ago
In the plate tectonics theory, the lithosphere is divided into ____.
NISA [10]

The right option is; B. 7 major plates and many smaller plates

In the plate tectonics theory, the lithosphere is divided into 7 major plates and many smaller plates.

The plate tectonics theory is a scientific theory that explains that the Earth's lithosphere which is the rigid outer layer of the earth is made up of seven large continental and ocean sized major plates and many minor smaller plates. The movements of the plates are relative to each other and it usually ranges from zero to 100 mm per year. The interactions of the plates along their boundaries are thought to be the primary cause of majority of the earth’s seismic and volcanic activity.


8 0
4 years ago
Read 2 more answers
HELP!
Mnenie [13.5K]

Ptolemy was an astronomer and mathematician. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory.With the development of the heliocentric model by Nicolaus Copernicus in the 16th century, the Sun was believed to be the center of the Universe, with the planets (including Earth) and stars orbiting it.

5 0
4 years ago
Which events take place in the light-dependent reactions of photosynthesis?
Bas_tet [7]
I think its A light energy is converter sugars
4 0
3 years ago
Dwarf mistletoes are flowering plants that grow on certain forest trees. They obtain nutrients and water from the vascular tissu
Galina-37 [17]

Answer:

C) commensalism

Explanation:

Commensalism is an interaction in which one organism benefits without causing any harm to the other. The other organism derives no benefit from the relationship.

The scenario above in which the dwarf mistletoe obtains nutrients from the vascular tissues of trees is a perfect example of such a relationship.

Parasitism is similar to this but the other organism is harmed in the process.

6 0
4 years ago
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