Which one of the following statements about a typical fern life cycle is false?
A. Sori contain sporangia.
B. Spores are haploid.
C. Gametophytes have rhizomes.
D. Gametes are produced by mitosis.
E. The sporophyte grows out of an archegonium.
C. Gametophytes have rhizomes.
You might also like to view...
One surprise from comparative genome projects is that
A) all species examined so far have the same genes. B) we do not know the function of a great many genes. C) small organisms can have large genomes. D) large organisms can have small genomes.
Systematists strive to organize taxa that represent monophyletic groups
Indicate whether the statement is true or false.
Which is an example of a SNP? (Select all that apply.)
A) A single base near the neurofibromatosis gene can be a G or a T; phenotype is not affected. B) A single base change in the gene for ? globin changes an amino acid and results in sickle cell anemia. C) Individuals with Huntington disease have more trinucleotide repeats in the coding region of the HD gene than normal individuals. D) The most common cystic fibrosis allele has a deletion of three base pairs in the coding region of the CFTR gene.
If an amphibian zygote is manipulated so that the first cleavage plane fails to divide the gray crescent, then _____
A) the daughter cell with the entire gray crescent will die B) both daughter cells will develop normally, because amphibians are totipotent at this stage C) only the daughter cell with the gray crescent will develop normally D) both daughter cells will develop abnormally