cameroon gce o level june 2017 human biology Paper 1

cameroon gce june o level 2017 human biology Paper 1

cameroon gce june o level 2017 human biology Paper 1

6. Sex linkage is defined as:
A The linking of genes on the sex chromosomes.
B The occurrence of genes on the sex chromosomes.
C The occurrence of genes found on the Xchromosomes and transmitted together with sex.
D The occurrence of genes that determine sex on the
chromosomes.
7 . Which of the hormones listed below causes
an increase in heartbeat when secreted in blood?
A Insulin
B Adrenaline
C Thyroxin
D Glucagon
How does the skin prevent excessive loss of heat in
cold conditions?
A The liver steps up its metabolic activities.
B The hair erector muscles relax.
C The rate of panting increases.
D The rate of sweating reduces.

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