(a) A child belongs to blood group 0 and the mother be-longs to group B.
BIOLOGY
WAEC 2017
(a) A child belongs to blood group 0 and the mother be-longs to group B. With the aid of genetic cross, state the possible blood groups of the father.
(b) (i) Name two forms of adaptive communication in animals
(ii) State two reasons why organisms communicate with one an-other.
Explanation
A child belongs to blood group 0 and the mother be-longs to group B. With the aid of a genetic cross. State the possible blood groups of the father
(a) Genetic cross
If the father is group A
(b)i. Forms of adaptive communication
- Sound/auditory/acoustic
- visual; smell/chemical/ pheromones
- tactile
- electrical signal
- display.
ii. Reasons why organisms communicate with one another
- for food
- maiting/reproduction
- territorial defence
- danger/threats/predator
- tracking routes.
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