Which functions earlier in development: maternal-effect genes or zygotic genes?

What will be an ideal response?


maternal-effect genes

Biology & Microbiology

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Assuming exposure to the same climate, which of the following aquatic systems would be MOST stratified?

A) 20 m deep freshwater river B) 50 m deep marine water fjord C) 200 m deep saltwater lake D) 300 m deep freshwater lake

Biology & Microbiology

Genotype refers to

A) the number of alleles of a gene that a person has. B) the combination of alleles for a particular gene. C) a person's entire genome sequence. D) the appearance of a trait.

Biology & Microbiology

The production of sterile male ligers is an example of __________.

A. A post-zygtic barrier B. The founder effect C. A pre-zygotic barrier D.. Sympatric speciation

Biology & Microbiology

Where are metanephridia found?

a. in mammals b. in flatworms c. in insects d. in annelids

Biology & Microbiology