IDENTIFICATION (Subject - Development Biology) 1. It is a historical transformation of the forms of life starting from the simple forms of the past to the complex forms of the present? 2. This is formed when small group of cells segregate from another group of cells? 3. Its a process when one embryonic region interacts with the second and affects the second regions differentiation or behaviour?

IDENTIFICATION - Define what is asked (Subject - Developmentan Biology) 1. Development of specialized cells types from the undifferentiated cells. 2. It shows the organ forming tissues

Talking about the influence of our environment in the growth and developmental process, which among the statements below is not under the concept of environment?  a. Food and all things that stimulate our sense organs b. The rate wherein each individual develops uniquely c. Everything inside the individual (e.g. cell, genes, etc.)

6)From the menu on the left on Virtual Urchin, click on "embryogenesis to hatching". This will display a video of sea urchin development. Photos of key stages taken with a scanning electron microscope (SEM) are shown next to the video. In addition to watching the video by clicking the play button, you can use the slider at the bottom to move through the stages step by step. Doing this will allow you watch how cell division increases the number of cells from the initial zygote. You'll notice that these divisions start off dividing cells evenly, but at a certain point, there are some smaller cells created. These smaller cells will play very important roles in the later development stages of the urchin, so their creation is a key milestone.   Which round of cell division is uneven? (hint: the SEM images will be helpful) a)First b)Second c)Third d)Fourth e)Fifth