What are homeotic genes?  Please exaplain ow they control the sequence of whorl development in flowers according to the ABCDE model.

Suppose a flower had normal expression of genes A and Cand expression of gene B in all four whorls. Based on the ABChypothesis, what would be the structure of that flower, startingat the outermost whorl?(A) carpel-petal-petal-carpel(B) petal-petal-stamen-stamen(C) sepal-carpel-carpel-sepal(D) sepal-sepal-carpel-carpel

What are phase changes in plant development? What two groups of genes control the formation of the flower? What is the ABC hypothesis?

d. Based on ABC model of floral development, this/these gene/genes controls/control the development of stamens in the third whorl of a flower. (A) A class gene (B) B + C class genes (C) A + B class genes (D) C class gene

explain the following:P→ Parental generation.G → Gametes.F1→ First filial generation.F2→ Second filial generationGenotype (F2 (Phenotype (F2) I chose Stem length

What process is occuring indicated by the letter A Name the strcuture indicated by the letter B Name the strcuture indicated by the letter C What process is occuring between zygote to embryo stage indicated by the letter D? What process indicated by letter E is occuring that result in the plant zygote? What strcuture is in the circle indicated by the letter F? What word is used to describe the strcuture indicated by the letter G? What are those small strcutures that are settling on this flower part indicated by the letter H.

Using just the 'ABC model' of floral development what would you need to change in terms of genes or gene expression to get male only flowers, but still have 3 different floral whorls in total?  Then what would you need to change to get female flowers and again have three different floral whorls in total?

in flowering control of plant, describe a situation wherein there are mutations in at least one or all of the genes responsible for control of the floral development.

The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words, gene A is active in all cells in the rings labeled sepal and petals. Interpret the figure by filling in the following table: I've numbered each row to help with writing the answer below. Determined by the activity of which gene(s) - A,B,C? Organ Carpel 1. Stamen 2. Petal 3 Sepal 4 Sepals Petals Stamens Bn Carpels

The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words, gene A is active in all cells in the rings labeled sepal and petals. Sepals Petals Stamens LEnCarpels A close relative of this flower has very large sepals compared to this one. Apply what you know about morphogenesis in plants to make a hypothesis of how gene expression might differ in the relative compared to this plant. Be sure to relate it to the figure above.