zahradawkins2007
04.10.2019 •
Biology
How do carriers/heterozygotes keep the lethal gene in population?
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Ответ:
A person with Ll, a carrier, CAN produce offspring with the genotype ll (lethal) if they have children with another carrier. (a 25% chance lethal, 50% carrier, 25% perfectly normal)
Ответ:
The ratio of the wrinkled seed-coat plants to the smooth seed-coat plants is 3:1. Thus, if we have 4 seeds, 3 of them is wrinkled seed-coat plants and 1 is smooth seed-coat plants. Represented as percentage there are 75% (3/4) wrinkled seed-coat plants and 25% wrinkled seed-coat plants.
If there are 633 plants, there will be, again, 25% wrinkled seed-coat plants.
Since 25% of 633 is 158.25, there are 158 smooth seed-coat plants.