cell population phenotype decreased conjugation frequency midori decreased conjugation efficiency reduced conjugation frequency reduced conjugation efficiency reduced zygote formation A cell population phenotype in which a smaller than normal proportion of cells in the population undergoes conjugation. FYPO:0000303 decreased occurrence of mating Note that this term refers specifically to conjugation, whereas experiments that measure mating efficiency often do so by counting zygotes plus asci, sometimes also including spores. For such experiments, we recommend using 'decreased mating efficiency' (FYPO:0000708). decreased mating frequency 2011-04-26T02:40:00Z abnormal phenotype