Genes & Body Plans F215
- Created by: Shannagh
- Created on: 03-02-15 19:38
View mindmap
- Genes & Body Plans
- Mutations
- Antennapedia - Legs appearing instead of Antenna
- Mutagens
- Retinoic Acid activates homeobx genes in vertebrates in the same order they are expressed.
- If too much consumed by pregnant women the expression can be distorted. Can cause birth defects
- Morphogen - governs the pattern of tissue development
- Retinoic Acid activates homeobx genes in vertebrates in the same order they are expressed.
- Homeobox Genes
- Maternal-Effect Genes determine embryos polarity
- Segmentation Genes specify polarity of each segment
- Contains sequence of 180 base pairs called the homeobox.
- Produces 60 amino acids- some are transcription factors and regulate the expression of other genes
- Arranged in Hox clusters
- Nematodes have 1
- Drosphilia have 2
- Vertebrates have 4
- Homeotic Selector Genes specify identy of each segment and direct development of individual body segments
- Mutations
- Antennapedia - Legs appearing instead of Antenna
- Mutagens
- Retinoic Acid activates homeobx genes in vertebrates in the same order they are expressed.
- If too much consumed by pregnant women the expression can be distorted. Can cause birth defects
- Morphogen - governs the pattern of tissue development
- Retinoic Acid activates homeobx genes in vertebrates in the same order they are expressed.
- Mutations
- Genes control the development of the body plan including polarity and positioning of organs
- Signal molecules activate homeobox genes after fertilization
- Homeobox Genes
- Maternal-Effect Genes determine embryos polarity
- Segmentation Genes specify polarity of each segment
- Contains sequence of 180 base pairs called the homeobox.
- Produces 60 amino acids- some are transcription factors and regulate the expression of other genes
- Arranged in Hox clusters
- Nematodes have 1
- Drosphilia have 2
- Vertebrates have 4
- Homeotic Selector Genes specify identy of each segment and direct development of individual body segments
- Mutations
Similar Biology resources:
Teacher recommended
Comments
No comments have yet been made