Gene And Animal Development

Question 1

What is embryonic development?

Answer 1

Involves cell division, cell differentiation and morphogenesis

Just think of the stuff we did in cell bio

Question 2

What is cleavage

Answer 2

The division of cells in the early embryo stages. Its also known as the clevage furrow in meiosis/mitosis

Question 3

What is a blastula

Answer 3

An animal embryo at the early stage of development when its a hollow ball of cells

Question 4

What is a blastomere

Answer 4

The hollow cells in the blastula which are formed by cleavage

Question 5

What is the blastocoele

Answer 5

A fluid filled cavity in early stages of embryonic development

Question 6

What is holoblastic cleavage?

Answer 6

Cells with little yolk and central blastocoele

Cleavage furrow can pass through entirely

Question 7

What is a meroblastic clevage

Answer 7

Lots of yolk, the cleavage furrow cant pass through it

Meroblastic is terroblastic

Question 8

What is the gastrulation process?

Answer 8

Happens after clevage,

Reorganising of the hallow blastula in the germ layers (gastrula)

Question 9

What is the gastrula process?

Answer 9

Process of the 2/3 germ layers forming