There are 64 codons and 20 amino acids. which of the following is not true?
a. several different codons can specify the same amino acid.
c. all amino acids are linked to a codon.
d. each amino acid is specified by only one codon.

Match the following terms and definitions. 1. transcription when genes are neither dominant nor recessive and display a blending of traits in the phenotype 2. translation converting the genetic code into the language of proteins 3. monohybrid cross genes that are carried on the x chromosome 4. incomplete dominance the transfer of genetic code from dna to an rna molecule 5. sex-linked genes the breeding of two organisms which differ in a single trait

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Aristotle classified animals according to their a. habitat and mating behavior c. mating behavior and relatedness b. habitat and physical differences d. physical differences and mating behavior