Fertilisation of an egg cell means......(1) E | vedclass

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(A) The process of fertilisation involves several key biological events:$(1)$ Fertilisation marks the final step of oogenesis,as the secondary oocyte

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$1, 2, 4, 5$

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(A) The process of fertilisation involves several key biological events:$(1)$ Fertilisation marks the final step of oogenesis,as the secondary oocyte completes its second meiotic division only upon the entry of a sperm.$(2)$ The entry of the sperm induces the completion of the second meiotic division,resulting in the formation of a haploid ovum and a second polar body.$(4)$ Fertilisation prevents the degeneration of the corpus luteum,which continues to secrete progesterone to maintain the endometrium for pregnancy.$(5)$ The fusion of the male and female gametes results in the formation of a diploid zygote.Statement $(3)$ is incorrect because the corpus luteum does not degenerate upon fertilisation; it persists to support the pregnancy.Therefore,the correct statements are $(1)$,$(2)$,$(4)$,and $(5)$.

Fertilisation of an egg cell means......
$(1)$ End of the process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintaining progesterone levels in the blood
$(5)$ Formation of a zygote

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Fertilisation of an egg cell means......$(1)$ End of the process of oogenesis$(2)$ Induces the completion of the second meiotic division$(3)$ The corpus luteum degenerates$(4)$ Signals for maintaining progesterone levels in the blood$(5)$ Formation of a zygote