Answer:
the time that cell spend in prophase is 30 minutes
Explanation:
The computation is shown below:
= Number of cell ÷ sample
= 25 ÷ 100
= 1 ÷ 4
Now it takes two hours
So,
= 1 ÷ 4 × 2 hours
= 0.5
This 0.5 represent the 30 minutes
Hence, the time that cell spend in prophase is 30 minutes
Answer:
A
Explanation:
Answer is option one, or A
When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes. A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.
Answer:
a. back muscles are strong to maintain erect posture.
Explanation:
Human back muscles are categorized as superficial, intermediate and deep muscles. The intrinsic (deep) back muscles of the human back regulate the movement of spine and maintain erect posture of human.
For example, the erector spinae is the largest muscle of the human back and is present on either side of spine. It consists of iliocostalis muscles (lateral), longissimus muscles (intermediate), and spinalis muscles. Together these muscles serve in extension of the spine and maintain the erect posture of the spine.
Energy is increases as frequency increases and wavelength decreases
Explanation:
The energy of wave is a function of its wavelength and frequency .
Wavelength is distance between two successive crests of a wave.
Frequency is the number of waves that passes a point per unit time.
Energy is directly proportional to the frequency of waves. The higher the frequency of waves the higher is its energy.
C = f ∧
C is the velocity of light
f is the frequency of wave
∧ is the wavelength of the wave
E = hf = 
= hf
h is the planck's constant
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Electromagnetic radiation brainly.com/question/6818046
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