Answer:
Supported repeatedly as new discoveries have been made.
Explanation:
Answer AND Explanation:
Occasionally the zygote fails to move down the oviduct to the uterus but instead gets implanted into the walls of the oviduct where it develops. If the passage of the fertilized ovum is slowed and hatching occurs prior to the ovum reaching the endometrial cavity, the embryo may implant in the fallopian tube. This condition is called ectopic pregnancy. The most common location in the fallopian tube for ectopic pregnancies to occur is the ampulla (70.0%); other locations, such as the isthmus (12.0%), the fimbria (11.1%) and the cornua (2.4%), are less common.
Answer:
The correct answer would be RNAi or RNA interference.
It is a technique to down regulate the gene expression, especially at translation level.
In this method, short sequence RNA such as miRNA or siRNA which are complementary to targeted mRNA are used. These are inserted into the cell after which they bind to the mRNA to form a double-stranded mRNA molecule.
Due to double-strand configuration, translation factors and other machinery can not attach to the mRNA.
Consequently, translation can not proceed.
The same is observed in the experiment in which complementary mRNAs bind to each other and prevent translation.
the CNS; because somatic motor neurons always cause contraction in skeletal muscle
