Green seed color is dominant over yellow seed color. If a plant produces gametes with only
yellow seed color, which of the following must be true?
a. Both parents were homozygous recessive for this trait.
b. Both parents carried the recessive trait.
c. One parent was homozygous recessive, and the other was homozygous dominant.
d. Both parents were homozygous dominant for this trait.
B
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____ is common in sandy intertidal areas
a. Predation b. Algal grazing c. Deposit feeding d. Parasitism
A SNP that can exist as a C or G is associated with a human disease. The genotypic odds ratio of the homozygote CC relative to the homozygote GG is 2.2, which indicates that
A) both CC and GG individuals are equally likely to get the disease because 2.2 is not a significant value. B) heterozygotes are 2.2 times as likely to get the disease as GG homozygotes. C) CC homozygotes are 2.2 times as likely to get the disease as GG homozygotes. D) CC homozygotes are 2.2 times less likely to get the disease as GG homozygotes.
Chloroplasts and mitochondria share something with the nucleus that the other organelles do not. What is this shared function or component?
A) They are the only organelles wrapped in a lipid-based membrane. B) They are the only organelles that are located in the cytosol. C) They are the only organelles that contain DNA. D) They are the only organel
What evidence contributed to the formulation of the RNA-first hypothesis?
A. More primitive cells, such as archaea, use an RNA only information system. B. RNA continues to evolve chemically today. C. Protocells contain only RNA and lipids. D. RNA was formed in MIller's experiment. E. RNA can sometimes be both a substrate and an enzyme during RNA processing.