Albinism is a recessive trait. A man and woman who both have normal pigmentation have one child out of three who has albinism (without melanin pigmentation). The genotypes of this child's parents: (C) Both parents must be heterozygous.
Albinism is an autosomal and not a sex-linked recessive trait.
Only homozygous recessive (aa) offspring will be albino, both homozygous dominant (AA) and heterozygous dominant (Aa) offspring will possess the normal phenotype.
Since it is given that both the father and the mother have normal pigmentation, thus they must both have the genotype Aa.
From the Punnett square it can be observed that a cross between the parents would result in the creation of three offspring with the normal genotype (one with AA and two with Aa) and one offspring with the genotype aa (albino).
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In ancient times, people did not know the causes or carriers of diseases. Since they could not come up with a scientific reasno with thier current technology, they diecided that the gods sent the diseases as a punishment for thier sins.
Answer:
axon terminals of sensory neurons
axon terminals of motor neurons
Explanation:
Relay neuron are found in the brain and spinal cord between the motor terminals or response and sensory neurons. Sensory neuron transmit signal to the relay neurons connect sensory neuron to motor neuron. The motor neuron then send electrical impulses to the effector which produces a response.
