Dominant traits are expressed only in the heterozygous state. Indicate whether the statement is true or false
F
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In which of these groups does it appear that the cuticle evolved?
A. Streptophytes B. Bryophytes C. Algae D. Land plants E. Pterophytes
Which of these hormones can diffuse through the plasma membrane?
a. polypeptide b. epinephrine c. thyroxine d. norepinephrine
In a "silent" mutation the
A. mutation is not in DNA. B. codon that mutates does not cause a change in the amino acid specified. C. codon that mutates causes a stop codon to occur instead of the placement of an amino acid. D. mutation does not occur in a codon. E. codon that mutates causes a change in the amino acid specified.
Assume that you have a garden and some pea plants have solid leaves and others have striped leaves. You conduct a series of crosses [(a) through (e)] and obtain the results given in the table
Cross Progeny solid striped (a) solid × striped 55 60 (b) solid × solid 36 0 (c) striped × striped 0 65 (d) solid × solid 92 30 (e) solid × striped 44 0 Define gene symbols and give the possible genotypes of the parents of each cross.