in mendel's experiments with garden pea, round seed shape (rr) was dominant over wrinkled seed (rr), yellow cotyledons (yy) was dominant over green cotyledons (yy). what are expected phenotypes in f2 generation rr × rryy
round seeds with yellow cotyledons and wrinkled seeds with green cotyledons
yes, the plants have chloroplasts and they have chromoplasts. 

chromoplasts contain pigments, just like chloroplasts, but the pigments are not photosynthetic. their abundant pigments overwhelm the light reflected from the chloroplasts making the leaf another color. chromoplasts are what color flowers, fruit and other plant parts. the function of chromoplasts pigments can be as a signal or protective.

chromoplast content in leaves varies naturally in plants. plants with more chromoplasts can survive regions of marginal nutrient resources because they are better protected from both oxidative and uv stress. the green leaved sugar maple is more sensitive to nutrient stresses associated with low ph soils than the red maple acer rubrum. acidic soils are less fertile. an increase in chromoplast content can mediate the negative effects of nutrient imbalances on maples by relieving uv & oxidative stress. red maples can out compete other maples for nutrient poor acidic soils by having more chromoplasts. 
http://www.ingentaconnect.com/content/bsc/pce/2005/00000028/00000007/art00005 
http://www.rsc.org/delivery/\_articlelinking/displayhtmlarticleforfree.cfm?journalcode=pp&year=2005&manuscriptid=b417802e&iss=4

chromoplasts content in flowers signals to pollinators while in fruit it signals to seed dispersers when the plant is ready for them. chromoplasts are not different organelles they are chloroplasts that continued to mature with regulation to produce more carotenoids or anthocyanins than chlorophylls. The next shapes in the ‘growing’ pattern are as follows:


![](https://mathsgee.com/?qa=blob&qa_blobid=5951663371716016349) more like retain oxygen intake /efficiency. dihybrid crossratio in f2 generation of a dihybrid cross is always 9:3:3:1 five factors are known to affect allele frequency in populations i.e., hardy-weinberg equilibrium. these are gene migration or gene flow, genetic drift, mutation, genetic recombination and natural selection.gene migration or gene flow – it is movement of alleles into a gene pool or out of a gene pool. when this movement of alleles takes place gene frequencies change in the original as well as in the new population. new genes/alleles are added to the new population and these are lost from the old population. this will lead to a gene flow if this gene migration, happens multiple times.genetic drift – if the movement of alleles into a gene pool or out of a gene pool takes place by chance it is called genetic drift. this always influences frequencies of alleles and s inversely proportional to the size of the population. it sometimes result into founder effect i.e., when a small group of individuals get isolated from a larger population to form a new population. genetic drift may result into reduced genetic variation.mutation – is the large difference arising suddenly in a population, they are random and occur in all directions.natural selection – is a process in which heritable variations enabling better survival are enabled to reproduce and leave greater number of progeny. that is nature selects only those traits which help an organism to survive in the changed conditions. those that are not fit for survival perish in the long run leading to evolution of new species.genetic recombination – production of new offspring with traits which differ from parents is called genetic recombination. write the reactions of f2 with h2o? \[\ce{fecl2 +2naoh -> fe(oh)2 + 2naci}\] The oscilloscope needs to be set in the “X-Y” mode. two pink colored flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. the nature of the cross will be cross fertilization. cross fertilization is transfer of pollen grains from one plant to the stigma of flower borne of different plant of same species. negative δs → system gets orderly[readmore]notice for b, the 2nd panel has particles which are compact.therefore, the most negative δs is b.