Biology: Ontogeny

Question 1

Homeotic genes control the _______________________.

Answer 1

Pattern of body formation during early embryonic development of organisms

Question 2

(T/F): Plant development involves the activity of homeotic
genes.

Answer 2

TRUE

Question 3

Arrange the steps of the development of a simple cell to a more complex organism: fertilization, gametogenesis, gastrulation, cleavage, organogenesis, growth and histological differentiation

Answer 3

Gametogenesis-fertilization-cleavage-gastrulation-organogenesis-growth and histological differentiation

Question 4

What is the correct sequence of events in the development of the embryo? (morula, cleavage, blastula gastrula)

Answer 4

Cleavage → morula → blastula → gastrula

Question 5

Germ layer that gives rise to epithelial tissue, nervous system, sensory receptors

Answer 5

Ectoderm

Question 6

Germ layer that gives rise to skeletal, muscular, excretory, circulatory, lymphatic, reproductive systems, dermis, body cavity lining

Answer 6

Mesoderm

Question 7

Germ layer that gives rise to epithelial linings of systems, liver, pancreas, thymus, thyroid/parathyroid gland

Answer 7

Endoderm

Question 8

What organism is the insulin gene inserted into in recombinant DNA technology?

Answer 8

E coli