Choose the correct developmental sequence of animal development. cleavage → gastrulation → organogenesis → fertilization cleavage → fertilization → gastrulation → organogenesis organogenesis → cleavage → fertilization → gastrulation gastrulation → cleavage → fertilization → organogenesis fertilization → cleavage → gastrulation → organogenesis

Fertilization >> Cleavage >> Gastrulation >> Organogenesis

Explanation:

While differences are seen depending on the species under study, embryonic development follows a relatively stereotyped pattern, as follows:

1) Fertilization: The zygote (first cell, technically an unicellular embryo) is formed by the fusion of the male and female gametes.

2) Cleavage: The zygote undergoes a series of cell divisions, resulting in a multicellular embryo (usually called a blastula).

3) Gastrulation: The blastula undergoes a series of transformations (mediated by processes like cell differentiation, migration, and/or shape change) which results in the acquisition of core anatomical features such as the main germ layers (ectoderm and endoderm, mesoderm if present) and rudiments of the digestive tract.

4) Organogenesis: After gastrulation, the embryo has acquired an anatomical outline reminiscent of the mature individual. Now, specific organs begin development from precursor populations called “primordia”.

Note that, in practice, the aforementioned stages may temporally overlap.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up