What is maternal effect gene?
What is maternal effect gene? Maternal-effect genes are transcribed in the mother and their mRNA influences development of oocytes and embryos. Maternal-effect genes were discovered by determining whether the mother carries a mutant gene that results in an inability to rescue her embryo when the father contributes a wild-type gene. What are zygotic effect genes? A gene expressed in the early embryo. Embryos with mutations in zygotic genes are phenotypically abnormal, and this phenotype is dependent on genetic contributions from both parents, i.e., upon the genotype of the zygote, rather than the genotype of the mother or the father alone....