Figure 3. Analysis of Exchanges in Pachytene Oocytes from Unexposed and BPA-Exposed βERKO Females.
(A) For unexposed animals, there was no difference in mean number of MLH1 foci/cell between wild-type (26.3 ± 3.0) and heterozygous (25.8 ± 2.8) females, but unexposed mutants (28.7 ± 3.2) were highly significantly increased over wild type (t = 6.0; p < 0.001). These data represent the results from five unexposed pregnant females. For +/+ animals, 124 cells were analyzed from four females; for +/−, 44 cells from three females; and for −/−, 114 cells from four females. Data are provided as mean ± standard deviation.
(B) Among exposed animals, the mean values for the three genotypes were virtually identical, but all had highly significantly elevated means over that of unexposed wild-type animals (28.6 ± 3.5, t = 3.5, p < 0.001; 28.1 ± 3.5, t = 4.5, p < 0.001; 28.1 ± 3.5, t = 3.9, p < 0.001 for +/+, +/−, and −/−, respectively). These data represent the results from six pregnant females implanted with BPA pellets. For +/+ animals, 35 cells were analyzed from two females; for +/−, 136 cells from six females; and for −/−, 89 cells from five females. Data are provided as mean ± standard deviation.
