Plant embryonic development, also plant embryogenesis, is a process that occurs after the fertilization of an ovule to produce a fully developed plant...

biology, animal embryonic development, also known as animal embryogenesis, is the developmental stage of an animal embryo. Embryonic development starts with...

is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life...

the tips of organs, or between mature tissues. Thus, a living plant always has embryonic tissues. By contrast, an animal embryo will very early produce...

part of the embryo within the seed of a plant, and is defined as "the embryonic leaf in seed-bearing plants, one or more of which are the first to appear...

Organogenesis is the phase of embryonic development that starts at the end of gastrulation and continues until birth. During organogenesis, the three...

In botany, a bud is an undeveloped or embryonic shoot and normally occurs in the axil of a leaf or at the tip of a stem. Once formed, a bud may remain...

Ivo; Quint, Marcel (2016-02-23). "Post-embryonic Hourglass Patterns Mark Ontogenetic Transitions in Plant Development". Molecular Biology and Evolution. 33...

cells in the adult organism. The main processes involved in the embryonic development of animals are: tissue patterning (via regional specification and...

generally or as standard occurs 2 weeks before the actual fertilization. Embryonic age, in contrast measures the actual age of the embryo or fetus from the...

homunculus – that simply becomes larger during development. The competing explanation of embryonic development was epigenesis, originally proposed 2,000 years...

cells, lacking many cellular components that would be necessary for embryonic development. They are specialized for motility, seeking out an egg cell and...

the plant other than at the stem apex or a leaf axil. Axillary – an embryonic shoot which lies at the junction of the stem and petiole of a plant. Dormant...

embryo. Following embryonic development, the fetal stage of development takes place. In human prenatal development, fetal development begins from the ninth...

cells make up the inner cell mass during the blastocyst stage of embryonic development, around days 5–14. These have stem-cell capability. In vivo, they...

flowering plants the megasporangium is also called the nucellus, and the female gametophyte is sometimes called the embryo sac or embryonic sac. Two distinct...

Tam, P.L.; Rossant, J. (2003). "Mouse embryonic chimeras: tools for studying mammalian development". Development. 130 (25): 6155–6163. doi:10.1242/dev...

gametes, either eggs or sperm. Unlike animals, plants do not have germ cells designated in early development. Instead, germ cells can arise from somatic...

assembly of similar cells and their extracellular matrix from the same embryonic origin that together carry out a specific function. Tissues occupy a biological...

differentiate into any embryonic cell, as well as any extraembryonic tissue cell. In contrast, pluripotent cells can only differentiate into embryonic cells. A fully...

controls the organized spatial distribution of cells during the embryonic development of an organism. Morphogenesis can take place also in a mature organism...

parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves). The two classes of flowering plants (angiosperms) are...

layer. As the plant becomes older, more endoderm will lignify. The following chart shows the tissues produced by the endoderm. The embryonic endoderm develops...

oogenesis (female) However, before turning into gametogonia, the embryonic development of gametes is the same in males and females. Gametogonia are usually...

regulates large-scale anatomical features in the early stages of embryonic development. Mutations in a homeobox may change large-scale anatomical features...

congenital disorder (birth defect) characterized by the failure of the embryonic prosencephalon to properly divide the orbits of the eye into two cavities...

chromosome may be present in an individual sperm. Early in female embryonic development, in cells other than egg cells, one of the X chromosomes is randomly...

to suspend development between autumn and spring, and in mammals such as the roe deer (Capreolus capreolus, the only ungulate with embryonic diapause[citation...

factor that determines the development of testis in mammals came from experiments carried out by Alfred Jost, who castrated embryonic rabbits in utero and noticed...

where embryology faced a mystery: zoologists did not know how embryonic development was controlled at the molecular level. Charles Darwin noted that...