Question

Marsupial mammals moved from South America to Australia via :
(a) Antarctica (b) Africa
(c) Galapagos Archipelago (d) Madagascar

Answer 1

Answer:

option c

Explanation:

When North and South America rejoined in the Pleio-pleistocene, South American marsupials migrated back into North America, where Didelphis virginiana, the American opossum evolved. Marsupials began to migrate to Australia and New Zealand from North America in the late Cretaceous or early Tertiary period

Today's Australian marsupials appear to have branched off from a South American ancestor to form all currently known marsupials -- kangaroos, the rodent-like bandicoots, and the Tasmanian devil.

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Answer 2

Marsupial mammals moved from South America to Australia via :

(a) Antarctica (b) Africa

(c) Galapagos Archipelago (d) Madagascar

When a man and woman carrying the allele for phenylketonuria but not having this disease marry and have a normal child without disease, then what is the probability that their child is a carrier of this disease ? (a) 0.25 (b) 0.50 (c) 0.75 (d) 1.00