The albino condition in plants is lethal ;that is ,in nature,homozygous albino p

Question

The albino condition in plants is lethal ;that is ,in nature,homozygous albino plants die soon after germination.Once the albino condition has appeared in a population,however,the condition usually persists generation after generation.How does this occur? The albino condition in plants is lethal ;that is ,in nature,homozygous albino plants die soon after germination.Once the albino condition has appeared in a population,however,the condition usually persists generation after generation.How does this occur?

Explanation / Answer

Albino condition in plants is characterised by a genetic defect whereby the plants sprout without the production of chlorophyll. Without chlorophyll, most of the plants are unable to carry out photosynthesis and ultimately wither away and die. Now, albino plants are charactersied by genetically recessive traits. In some plants, where they are masked by the effect of dominant traits. So, they are unable to express themselves. But, they eventually remain present in the genome as a trait and express themselves when they turn homozygous for that trait. Also, pertaining to the genetic drift, there is sampling variation which further distributes the allele which results in fluctuations of allele frequency and is passed across generations.

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