If the blue F1 females in are backcrossed to the blue males in the P generation, what phenotypes and proportions of offspring will be produced?
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If the blue F1 females in are backcrossed to the blue males
in the P generation, what
be produced?
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- If the blue F1 females in Figure are backcrossed to the blue males in the P generation, what phenotypes and proportions of offspring will be produced?What genetic phenomenon does the production of a blue F1 from pink and white parents represent?there are 120 pink flowers and 112 white collected as a result of the second filial generation. What are the parental genotypes of the parents?
- What is the cross between the progeny of F1 and the homozygous reccessive parent called? How is it usefull?A pea plant that is dwarf with green, wrinkled seeds was crossedto a true-breeding plant that is tall with yellow, round seeds. TheF1 generation was allowed to self-fertilize. What types of gametes,and in what proportions, would the F1 generation make? Whatwould be the ratios of genotypes and phenotypes of the F2generation?Assume that the trihybrid cross AABBrr x aabbRR is made in a plant species. Assume that A and B are dominant alleles, but there is no dominance effect of alleles at the R locus. a) How many different gametes are possible in the F1generation? What are the genotypes of these gametes? b) What is the probability of the parental aabbRR genotype in the F2 progeny? c) What proportion of the F2 progeny would be expected to be homozygous for all three genes?
- Cross a heterozygous dominant purple flowered plant to a recessive white flowered plant. What is (are) the genotypes of the F1? And what is the genotypic ratio?In four o’clock(a type of flowering plant), red color flowers exhibit incomplete dominance over white; when both exist together, the flowers are pink a) in a cross between a red flower and a white one, what is the genotype of the offspring? b) what is the genotypes ratio of the F2 generation of two of the F1 from (a) are crossed?In which event would you see approximately equal amounts of parental and no-parental gametes being produced from the F1 generation?
- Why do the F1 chickens with genotype Cc Ii have white feathers?In Drosophila, a cross was made between a yellow-bodied male with vestigial wings and a wild-type (WT) female(brown body and normal wings). The F1 generation consisted of WT males and WT females. The F1 males and females were crossed, and the F2 progeny consisted of 16 yellow males with vestigial wings, 48 yellow males with WT wings, 15 brown males with vestigial wings, 49 WT males, 31 brown females with vestigial wings, and 97 WT females. Based on these results, explain the inheritance of the two genes (i.e. autosomal or sex-linked, dominant or recessive).If two loci are 10 cM apart, what proportion of the cells in prophase of the first meiotic division will contain a single crossover in the region between them?