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The mechanism that leads directly to morphogenesis is (a) differential gene expression (b) pattern formation (c) nuclear equivalence (d) cell differentiation (e) cell determination
Introduction: Many processes are involved in shaping the microorganism and its structures so that it performs the correct functions and with the greatest efficiency. An organism gains its form from an undifferentiated mass of cells to gain the function and characteristics that are specific to it. These processes are cell determination, cell differentiation, pattern formation, and morphogenesis.
Answer to Problem 1TYU
Correct answer: The mechanism that leads directly to morphogenesis is pattern formation. Hence, the correct answer is option (b).
Explanation of Solution
Reason for the correct answer:
Over many steps, an intricate pattern is created by the tissues to form organs, shapes, and structures of the organism and this is called pattern formation. It is driven by chemical signals. The process of morphogenesis proceeds by the process of pattern formation. Morphogenesis refers to the process of organizing the structures of the cell by forming it into shapes and structures that help to facilitate the function of the cells so that they perform their specific functions. Hence, pattern formation leads directly to morphogenesis.
Option (b) is given as “pattern formation”.
Pattern formation is caused due to morphogenesis. Hence, the correct answer is option (b).
Reasons for incorrect answers:
Option (a) is given as, “differential gene expression”.
Differential gene expression refers to the process by which cells express certain portions of their genes to perform specific functions. It occurs while the embryo is forming on the undifferentiated mass of cells and not during the development process. Hence, option (a) is incorrect.
Option (c) is given as, “nuclear equivalence”.
Nuclear equivalence is the principle that the nuclear content of cells remains conserved during the development of the embryo. It does not have any role in pattern formation or morphogenesis. Hence, option (c) is incorrect.
Option (d) is given as, “cell differentiation”.
Cell differentiation is the process by which a cell gets specialized to perform a particular function. It does have a role in the development of the organism but does not directly cause the process of morphogenesis or pattern formation. Hence, option (d) is incorrect.
Option (e) is given as, “cell determination”.
Cell determination is the process by which a cell gets the signal to perform a particular function. It does have a role in the development of the organism but does not directly cause the process of morphogenesis or pattern formation. Hence, option (e) is incorrect.
Hence, the options (a), (c), (d), and (e) are incorrect.
Pattern formation leads to morphogenesis.
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Chapter 51 Solutions
BIOLOGY LL VERSION + MINDTAP V2.0(2 TER
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