CAIE A-Level Biology 18.3.4 Assisted Reproduction in Endangered Mammals

Practise sequencing IVF, embryo transfer and surrogacy, then explain how cryopreserved gametes and selected donors can increase breeding success and diversity.

Exam points

sequence hormone treatment, oocyte collection, fertilisation and embryo placement
describe embryo transfer or surrogacy using selected embryos and recipient females
explain how frozen gametes preserve alleles and widen the available gene pool

[Maximum number: 4]

Zoos work with local groups around the world to help conserve endangered species. One example of this is the use of assisted reproduction, such as IVF, with endangered mammals such as the eastern black rhino.

Outline the process of IVF.

Figure for Question 18.3.4—Assisted reproduction in endangered mammals question 1 — CAIE A-Level Biology A2

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18.3.4—Assisted reproduction in endangered mammals question 1