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olya-2409 [2.1K]
2 years ago
14

Science is best described as a:

Biology
1 answer:
Sophie [7]2 years ago
8 0
2. Process to test hypotheses
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For natural selection to occur, there must be variety or diversity within a species.
Lisa [10]
True, how would the selection be made without diversity or variety it’s obviously true
3 0
3 years ago
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For three traits inherited in a dominant/recessive pattern, what is the probability of an offspring in a trihybrid cross between
AleksandrR [38]

Answer: For three traits inherited in a dominant/recessive pattern, the probability of an offspring in a trihybrid cross between parents heterozygous for all three traits to be recessive at exactly two of the three loci is 23/64.

Explanation: Let A, B and C represent the dominant alleles and a, b and c represent the recessive alleles. The genotype of each of the parent will be AaBbCc since it has been said to be heterozygous for all the three traits. There are eight (8) possible different types of gametes from each of the genotype. This can be calculated using 2^n where n is the number of heterozygous loci.

The number of heterozygous loci in the genotype AaBbCc is three (3). 2^3 = 8. The gametes are;

ABC

ABc

AbC

Abc

aBC

aBc

abC and

abc.

Therefore, sixty-four possible offsprings are expected from the cross AaBbCc x AaBbCc.

Out of these offsprings, twenty-three (23) are expected to be heterozygous at two loci as boldly shown in the attached image.

8 0
3 years ago
What is the difference between an introduced and an invasive species?(1 point)
kaheart [24]

Answer:B, an introduced species is not necessarily harmful to the environment, an invasive species has a negative effect

Explanation:

3 0
3 years ago
How are temperature and salinity related in a thermohaline circulation pattern?
katovenus [111]

Answer:

The correct answer is option D.

Explanation:

Thermohaline circulation is the circulation of currents in the deep ocean due to the density of the water which is controlled by heat and salinity. Water in the ocean posses layers or defined boundaries based on the density which provides driving force to the deep ocean currents.

Formation of these layers is due to the sinking of the cold water in the basin which and ice formation which leaves the salt in the seawater ,therefore, increasing salinity. This increased salinity increases its density and the surface water is replaced by the sinking water causing deep ocean currents.

Thus, option D is the correct answer.

5 0
3 years ago
Explain why precise knowledge of the stimulus is critical in a task estimating auditory sensitivity.
sergeinik [125]

Answer:

The physical stimulus is the only part of the test that is measureable, and therefore, knowable. The stimulus is our anchor for our estimate of the listener's perception.

5 0
3 years ago
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