Snails have a diploid chromosome number of 22. after meiosis, the snail’s sperm or egg would have 11 chromosomes. how many chromosomes would the zygote have after fertilization?

11
22
33
46

The correct answer would be 22.

A zygote or fertilized ovum is produced by fusion of sperm and egg nuclei.  

Thus, both sperm and egg contribute their genetic material in the formation of a zygote.

This fertilization event restores the chromosomal number to that of the parent cell.  

Thus, the zygote of a snail would contain 22 chromosomes, 11 of which are contributed by sperm and other 11 are contributed by the egg.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)