How are genes used by cells to build proteins?
A) The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein.
B) The genes in RNA direct the synthesis of a DNA molecule, which is used to build a protein.
C) DNA is transcribed into an amino acid sequence.
D) The genes in RNA direct the synthesis of proteins directly.
Answer: A
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Answer the following statements true (T) or false (F)
1. Translation is a relatively slow process. 2. tRNA contains the genetic code for producing a polypeptide. 3. More than one codon can specify the same amino acid. 4. The termination of translation occurs when a release factor recognizes the stop codon.
Over time, knowledge and information have become an important factor in determining levels of economic development
Indicate whether this statement is true or false.
One characteristic that makes Caenorhabditis elegans attractive for developmental studies is:
a. its small, transparent body. b. the extensive number of genes shared with humans. c. the developmental defects that occur in this organism. d. the close evolutionary relationship between this mammal and humans. e. the presence of zygotic segmentation genes, similar to those found in humans.
A homozygous tomato plant with red fruit and yellow flowers was crossed with a homozygous tomato plant with golden fruit and white flowers. The F1 all had red fruit and yellow flowers
The F1 were testcrossed by crossing them to homozygous recessive individuals and the following offspring were obtained: Red fruit and yellow flowers—41 Red fruit and white flowers—7 Golden fruit and yellow flowers—8 Golden fruit and white flowers—44 How many map units separate these genes? A) 17.6 B) 15 C) 17.1 D) 18.1