The age of the Earth according to modern estimations is about
A. 8 billion years.
B. 4.6 billion years.
C. 3.5 billion years.
D. 1.5 billion years.
E. a few thousand years.
B. 4.6 billion years.
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Which one of the following amino acids is capable of forming a disulfide linkage?
A. tyrosine B. cysteine C. arginine D. methionine E. isoleucine
To conduct a phylogenetic analysis, we need an outgroup to:
A. decide which characters are analogous and which are homologous. B. determine which character states are ancestral and which are derived. C. determine which characteristics to include in our analysis. D. decide which molecular data to use. E. All of the answer options are correct.
It is estimated that there are fewer than 100 genetic diseases caused by single gene mutations in humans.
Answer the following statement true (T) or false (F)
______ is an example of a plant that is genetically modified to produce high quantities of betacarotene
for conversion to vitamin A. a. Tobacco c. Rice e. Watermelon b. Corn d. Apple