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- DRAW IT Pea plants heterozygousfor flower position and stem length(AaTt) are allowed to self-pollinate,and 400 of the resulting seeds areplanted. Draw a Punnett square forthis cross. How many offspring wouldbe predicted to have terminal flowers and be dwarf? (See Table 14.1.)BPA and Abnormal Meiosis In 1998, researchers at Case Western University were studying meiosis in mouse oocytes (germ cells) when they saw an unexpected and dramatic increase of abnormal events (FIGURE 12.6). Improper segregation of chromosomes during meiosis is one of the main causes or human genetic disorders. The spike in abnormal meiosis began right after the mouse facility started washing the animals' plastic cages and water bottles in a new, alkaline detergent. The detergent had damaged the plastic, which as a result was leaching bisphenol A (BPA). BPA is a synthetic chemical that mimics estrogen, the main female sex hormone in animals. Though it has since been banned for use in baby bottles, BPA is still widely used to manufacture other plastic items and epoxies (such as the coating on the inside of metal cans of food). BPA-free plastics are often manufactured with a related compound, bisphenol S (BPS), that has effects similar to BPA. FIGURE 12.6 Abnormalities in meiosis that occurred after exposure to BPA. Top, the most abnormal meiosis events occurred in mice that were housed in damaged plastic caging with damaged plastic bottles. Damaged plastic releases BPA. Bottom, fluorescent micrographs show the chromosomes (red) and spindle (green) in nuclei of mouse germ cells in metaphase I. A Normal metaphase; BD abnormal metaphase. What percentage of mouse oocytes displayed abnormalities of meiosis with no exposure to damaged caging?Which of these if a phenotype and which is a genotype. smooth leaf shape Tt
- If you cross heterozygous spherical (S) yellow (Y) seeded plant with dented(s), green(y) the offsping and the ratio would be: A)F:SsYy, ssyy; ration 1:1B)F: SSYy, Ssyy, ssYy, ssyy; ration 1:1:1:1C)F: SSYy, Ssyy, ssYy,ssyy; ration 1:1:1:1D)F: SsYy, Ssyy, ssYy, ssyy ration 1:1:1:1Round seed is dominant over wrinkled. Yellow cotyledon is dominant overgreen. Full pod is dominant over constricted. The genes for these traits arefound on separate chromosomes. If a trihybrid plant is self-fertilized, whatproportion of the progeny will have round seeds in constricted pods?Express answer in fraction form.A pea plant has the genotype TtRr. The independent assortmentof these two genes occurs at ________ because chromosomescarrying the ________ alleles line up independently of the chromosomes carrying the ________ alleles.a. metaphase of meiosis I, T and t, R and rb. metaphase of meiosis I, T and R, t and rc. metaphase of meiosis II, T and t, R and rd. metaphase of meiosis II, T and R, t and r
- A red flower (WW) and white flower (ww) (P1) have the ability to create pink flowers in their offspring (F1). What type of phenotype is shown and what would be the Phenotypic (%) of Pink flowers for the following? (WwxWw)If an organism's diploid number is 66, it's haploid number isIn rice, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male part of rice plants (i.e. the stamen) unable to produce fertile pollen; the female parts, however, remain receptive to pollination by pollen from male fertile rice plants. However, the presence of a nuclear fertility restorer gene F restores fertility to male-sterile lines. Give the result(s) of the cross and explain the phenotype of the offspring.
- 1)A researcher crossed a homozygous yellow seed plant (YY) and a heterozygous yellowseed plant (Yy). Draw a Punnett Square and determine the genotype and phenotyperatios of the offspring. please explain it simple and no copypastes thanksmust answer all other don't answer i need all part solvve Two pea plants are crossed, which are purebred. A father is round, terminal, violet and wrinkled, while the other expresses the phenotypes alternate rough, axial, white, and swollen. The four pairs of characters alternatives are regulated by four genes, each located in different chromosomes. In Fx only the characters round, axial, purple and puffy. In F2 all possible combinations of these characters according to Mendelian inheritance. (a) to what conclusions we can reach about the inheritance of these characters, based on the F1 results? (b) In the results of F2, what phenotype will appear more often? Write a mathematical expression that predict the probability of occurrence of said phenotype. (c) In the results of F2, which phenotype will appear less frequently? write an expression mathematics that predicts this probability. (d) In the F2 generation, with what probability will each of the two phenotypes of P1 appear? (e) If a…More Crosses with Pea Plants: The Principle of Independent Assortment In pea plants, long stems are dominant to short stems, purple flowers are dominant to white, and round peas are dominant to wrinkled. Each trait is determined by a single, different gene. A plant that is heterozygous at all three loci is self-crossed, and 2,048 progeny are examined. How many of these plants would you expect to be long stemmed with purple flowers, producing wrinkled peas?