Question

All cells in the body have the same genes, but cells become differentiated due to differences in gene expression.

True or False

TrueFalse

What cellular events must occur to establish the body pattern in an animal? (Check all that apply.)

Check All That Apply

• Cell division

  Cell division

• Hybrid formation

  Hybrid formation

• Cell migration

  Cell migration

• All cells live

  All cells live

• Cell differentiation

  Cell differentiation

• Apoptosis

  Apoptosis

The first morphogen gradient to provide positional information is established initially in the cellularized embryo.

True or False

TrueFalse

Answer 1

1. true
all cells in the body have same genes. but the cells are differentiated by its gene expression. a combination of genes that are expressed or repressed by the cell describes the morphology and functions of the cell. the process of the gene expression is regulated by the internal and externall cellular componenets.

2.cellular events that occurs to establish body pattern in animals include,
a. cell division: cell division is the process of reproduction of the cell where the parent cell divides and give rise to new daughter cells.
b. cell migration: cell migration is the process of development and maintenance of multicellular organisms, which include tissue formation, wound healinga and immune responses.
c.cell differentiation: cell differentiation is a process in which a cell changes from one type to another. the cell changes from a simple type to more complex type. for example the zygote changes to more complex tissues.
d.apoptosis: apoptosis is a process of removal of dead cells in the body. it is a process in which the cellular components are packed in a small packets for garbage collection by immune cells.

3. true:
the first identified morphogen that is transcription factor bicoid, which forms a gradient across the anterior-posterior axis of the early Drosophila embryo that patterns the head and thorax.