Answer:
The phenotypic ratio is the distribution pattern (expressed as a ratio) of the physical characteristics in the offspring obtained after a genetic cross.
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Answer:
Option C, At a subduction zone, oceanic crust is forced deep into the Earth.
Explanation:
At sub-duction zone, the dense oceanic plates coincides with the less dense continental plates and thus sink below the continental plates. Sometimes these oceanic plates being dense, sink to greater depth with in the earth’s mantle. The sub-duction zone causes earth quakes of high intensity when oceanic crust penetrates to greater depths of earth crust as they tend to change the rheology of the earths’ mantle and also causes bending of plates
Hence, option C is correct
Considering a viable error as a mutation that remains viable for the continuation of life, we can confirm that some people have red hair through viable errors due to mutations in the genetic code.
A viable error or mutation would be any mutation that allows the cell in question to stay alive. This is because there are mutations in which <em><u>key features or processes essential to life are altered. </u></em>
The cells that suffer these mutations would not be able to sustain life. The mutation that causes red hair is a mutation in the gene responsible for melanin (the pigment that gives hair its color) is <u>not one that affects an essential process.</u>
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For this reason, we can confirm that some people have red hair through viable errors given that these errors or mutations do not affect mechanisms <em><u>essential </u></em>to life.
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When using high power the diameter of the field of view would be 20 mm.
A microscope is an optical device that is used to view images that cant be seen with the naked human eyes.
It is made up of lens in which the diameter field of view can be determined.
The diameter of the viewed field in an optical microscope is termed the field number and represents the diameter of the field measured in millimeters (mm) at the intermediate image plane.
From the question, there are two types of field of view
- <u>Low-power field of view</u>: which is 2 millieters(mm) and
- <u>High power field of view</u>: which is 10 × low-power field of view
Therefore, to determine the diameter of the field of view when using high power is
10 × 2 = 20mm
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Answer:
e. The statement is true for meiosis I only.
Explanation:
When we talk about homologous chromosomes, we talk about two chromosomes forming a pair of genes. One comes from the mother, and one comes from the father in sexual reproduction.
The random segregation of chromosomes is what we call the result of crossing over during meiosis I, and is what generates genetically unique individuals in each reproduction.
