At which point of egg formation shown here are the cells haploid and diploid?
1.diploid at A, haploid at B, haploid at C
2.diploid at A, diploid at C, haploid at D
3.haploid at A, diploid at B, haploid at D
4.diploid at A, haploid at C, haploid at D
4
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As the products of photosynthesis are used as the reactants during respiration, these two processes are said to be:
A. antagonistic. B. complementary. C. supplementary. D. symbiotic. E. tangential.
The oxidized form of inorganic iron that results from microbial oxidative processes is ________.
A. nitrate ion B. ferric ion C. sulfate ion D. ferrous ion
How is a zygospore formed in the life cycle of a zygote fungus? How does it progress from a young zygospore to a mature zygospore?
What will be an ideal response?
You extract DNA from human bones in an ancient village buried by volcanic ash. You discover that there is an extremely high frequency of the LCT allele for lactase persistence. What might you conclude about the population?
A. This population is likely the source of the high frequency of the LCT gene in Northern Europe. B. The village could not be more than 4,500 years old. C. The members of this population likely used domesticated livestock for their milk. D. The villagers had a diet rich in wheat or another domesticated crop. E. The population could not have been under strong selection because the gene was not fixed.