Melanocytes are present in basal layer of epidermis .
The mesoderm
There are cells within the bottom layer of the epidermis (the stratum basale or stratum germinativum) called melanocytes. Melanocytes secrete a pigment called melanin which is responsible for giving our skin its color. Their main function though is to shield the nuclei of the keratinocytes (the main cells of the epidermis) to protect them from ultraviolet radiation from the sun. That's why we appear to tan in the sun.
The melanocytes are the melanin-producing cell in the bottom layer of the epidermis of the skin. Merkel cells are receptor cells found in the skin of vertebrates. They aid in the ability to sense light touch.
Gastrula (early gastrula follow the blastula in the development sequence) ~ As a result of gastrulation, a three-layered embryo forms, each layer corresponding to a primary germ layer from which all body tissues develop.
Melanocytes are present in basal layer of epidermis .
Melanocytes are located in the bottom layer of the skin's epidermis, middle layer of the eye, inner ear, meninges, bones and heart. Melanocytes function is to produce melanin, which is the pigment primarily responsible for skin color.
It develops from the endoderm germ layer
Gastrulation is first step towards germ layer development .
the choroid
Melanocytes are located in the bottom layer of the skin's epidermis, middle layer of the eye, inner ear, meninges, bones and heart. Melanocytes function is to produce melanin, which is the pigment primarily responsible for skin color.
endoderm
stratum basale and upper dermis
choroid
endoderm
Ectoderm
If your question is 'Is the trophoblast present during germ layer formation (i.e. gastrulation) ?' then the answer is YES