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kiruha [24]
2 years ago
13

Teosinte is a grass that grows wild in central America and includes several different very similar species. Over the course of t

housands of years, the farmers of central American carefully culled undesirable offspring and cross bred various teosinte species ultimately developing Zea mays or what we usually call corn. Which of the following statements is true regarding this process?
Select one:
a. This is not an example of evolution because humans did the selection process.
b. It would be possible to carefully select modern corn plants to ultimately wind up with teosinte.
c. The artificial selection applied by humans caused mutations in teosinte leading to the development of corn.
d. This is an example of evolution through artificial selection.
Biology
1 answer:
mart [117]2 years ago
3 0

Answer:

Which of the following statements is true regarding this process?

Select one:

a. This is not an example of evolution because humans did the selection process.

 Explanation:

This is not an example of evolution this is called domestication of plants by humans to adap wild organisms to fulfill its needs, and it is achieved by the process of artificial selection, croping individuals with larger and more nutritious fruits, and these plants seeds would fall to the ground attached to the cob, germinating at the same time and place and  without human assistance and care they would not survive.

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If there are two weights on the scale, one 1.5m from the fulcrum weighing 1.7 kg, and the second 1.2m from the fulcrum, what mus
kykrilka [37]

The fulcrum is the point in any mechanical device where the moment due to weights is zero.

(Weight 1 x distance 1) - (weight 2 x distance 2) = 0

(1.7 Kg x 1.5 m ) - (weight 2 x 1.2 m) = 0

weight 2 = (1.7 Kg x 1.5 m ) / 1.2 m

= 2.1 Kg





3 0
2 years ago
Question involving the equations for Hardy Weinberg equilibrium (A^2+2Aa+a^2=1, A+a=1)
Alinara [238K]

Answer:

Frequency of dominant allele is 0.9029

Explanation:

Total number of organisms = 12,845

Number of organisms representing dominant trait = 11,596. These organisms might have heterozygotes with one dominant allele and one recessive allele.

Hence, Number of organisms with recessive alleles = 12845 – 11596 = 1249

Frequency of recessive allele (q) = 1249/12845 = 0.0971

Frequency of dominant allele (p) = 1- q = 1-  0.0971 = 0.9029

5 0
2 years ago
A person whose body weight is more than 20 percent above the recommended level is categorized as __________.
MAXImum [283]
A person whose body weight is more that 20 percent above the recommended level is categorized as obese.

Hope this helps!

5 0
2 years ago
¡AYUDA! No entiendo...
leonid [27]
Is c a and b i hope im right
7 0
3 years ago
This particular hormone raises calcium levels in the blood and stimulates the removal of calcium from the bone through osteoclas
lesantik [10]

Answer:

Parathyroid hormone

Explanation:

Parathyroid hormone is directly involved in the bones, kidneys, and the small intestine. In the bones, PTH stimulates the release of calcium in an indirect process through osteoclasts which ultimately lead to resorption of the bones.

7 0
2 years ago
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