Developmental biology

bsc

1. Developmental BiologyDevelopmental Biology
An IntroductionAn Introduction

2. Animal DevelopmentAnimal Development

How has the study of How has the study of
development changed?development changed?

3. Animal DevelopmentAnimal Development
What kinds of questions areWhat kinds of questions are
developmental biologists asking?developmental biologists asking?

4. Animal DevelopmentAnimal Development
How does the
same genetic
information result
in different types
of cells?

5. Animal DevelopmentAnimal Development

How is cell division regulated?How is cell division regulated?

6. Animal DevelopmentAnimal Development

How do cells form ordered structures?How do cells form ordered structures?

7. Animal DevelopmentAnimal Development

How are reproductive How are reproductive
cells set apart?cells set apart?

8. Animal DevelopmentAnimal Development
How do changes in
development create new
body forms and what
changes are possible?

9. Animal DevelopmentAnimal Development

How do each of these contribute to the study How do each of these contribute to the study
of development?of development?

comparative embryologycomparative embryology

evolutionary embryologyevolutionary embryology

teratologyteratology

mathematical modelingmathematical modeling

10. Comparative EmbryologyComparative Embryology

Epigenesis Epigenesis
versus versus
preformationpreformation

11. Comparative EmbryologyComparative Embryology

How does the concept of germ layers support epigenesis?How does the concept of germ layers support epigenesis?

How does the concept of induction fit in here?How does the concept of induction fit in here?

12. Comparative EmbryologyComparative Embryology

What principles did What principles did
von Baer articulate von Baer articulate
with respect to vertebratewith respect to vertebrate
development?development?

13. Comparative EmbryologyComparative Embryology

General features of large group of animals General features of large group of animals
appear earlier than specialized features of appear earlier than specialized features of
smaller groupsmaller group

Less general characteristics develop from more Less general characteristics develop from more
generalgeneral

14. Comparative EmbryologyComparative Embryology

A particular type of embryo, instead of passing A particular type of embryo, instead of passing
through adult stages of a lower form, departs through adult stages of a lower form, departs
more and more from it.more and more from it.

Embryo of higher animal is only like early Embryo of higher animal is only like early
embryo of lower animal.embryo of lower animal.

15. Comparative EmbryologyComparative Embryology

How have fate maps How have fate maps
contributed to our contributed to our
understanding of understanding of
development?development?

16. Evolutionary EmbryologyEvolutionary Embryology

How have observations of embryos contributed to our How have observations of embryos contributed to our
understanding of evolutionary relationships?understanding of evolutionary relationships?

17. Evolutionary EmbryologyEvolutionary Embryology

Why is the distinction between analogous and Why is the distinction between analogous and
homologous structures important?homologous structures important?

18. TeratologyTeratology
How are malformations different from
disruptions?

19. Mathematical ModelingMathematical Modeling

What’s the difference between isometric and What’s the difference between isometric and
allometric growth?allometric growth?

20. Figure 1.20(1) Figure 1.20(1) Reaction-diffusion Reaction-diffusion
System of Pattern GenerationSystem of Pattern Generation

21. Figure 1.22 Figure 1.22 Pigment patterns of zebrafish Pigment patterns of zebrafish
homozygous for the wild-type allele (A) and for three homozygous for the wild-type allele (A) and for three
different mutant alleles (B–D) of the leopard genedifferent mutant alleles (B–D) of the leopard gene