Question 20 4 pts Which of the following statements are incorrect The early regi

Question

Question 20 4 pts Which of the following statements are incorrect The early regional pattern of the embryo arises through the action of the PAR proteins, which become segregated along the anteroposterior asis after fertilization and control the distribution of other cytoplasmic determinants between the carly blastomeres Total number of cells in C elegans is a result of mitosis, apoptosis and syncytium Mutation in the SKN1 gene results in thinner hypodermis iskin) Mutation in the gene PIE-1cause excess pharyns and intestine, no germline Mutation in the PAL1 sene results in posterior defective morphology

Explanation / Answer

Mutation in maternal SKN1 gene results in extra hypodermal cells instead of pharynx and intestine

Mutation in PIE1 gene (lacking activity of PIE1) leads to development of intestine and pharynx but no germ cells.

T box family protein tbx is responsible for morphological defect. PAL1 is not involve in posterior defective morphology.

The number of the cells in C.elegans maintained by mitosis and programmed cell death (apoptosis). Also syncytium plays important role in C.elegans. the germline cells of C.elegance are syncytium, where cell nuclei are arranged around central cytoplasmic core.

Hence the answer is,

“mutation in PAL1 gene is results in posterior defective morphology” is incorrect

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