Category: Biology

BIO205

Parthenogenesis,”Development of offspring fromunfertilized eggs• Some animals reproducesexually or parthenogenetically• Under specific conditions,human eggs can be induced toundergo parthenogenesis but aviable embryo cannot form.Among vertebrates, several genera of fishes, amphibians,and lizards, including whiptail lizards- Reproduce exclusively by a complex form of reproductionTimeOvarysize Hormones BehaviorOvulation OvulationProgesterone EstrogenFemalelikeMalelikeFemalelikeMalelike(a) Both lizards in this photographare C. uniparensfemales. The one on top isplaying the role ofa male. Every two or three weeksduring thebreeding season, individualsswitch sex roles.(b) The sexual behavior of C. uniparens is correlatedwith the cycle of ovulation mediated by sex hormones.As blood levels of estrogen rise, the ovaries grow,and the lizard behaves like a female. After ovulation,the estrogen level drops abruptly

Biology

Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review.Parthenogenesis,”Development of offspring fromunfertilized eggs•[…]

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