Which of the following is a product of meiosis and cytoplasmic division in seed plants that forms in an ovule and gives rise to an egg-producing gametophyte?
A. Sporangium
B. Megaspore
C. Microspore
D. Endosperm
E. Sporophyte
Answer: B
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In skeletal muscle, potassium ions are stored in the sarcoplasmic reticulum
Indicate whether the statement is true or false
In cats, a fur color gene is on the X chromosome. At this locus, cats can have a black allele or an orange allele. Cats who are homozygous for the black allele have black fur, cats who are homozygous for the orange allele have orange fur, and cats who are heterozygous at this locus are tortoiseshell. What offspring would you expect from a cross between an orange female and a black male?
A. tortoiseshell females and orange males B. tortoiseshell females and black males C. orange females and black males D. black females and orange males E. tortoiseshell females and tortoiseshell males
Which of the following is NOT characteristic of the rickettsias?
A. presence of a lipopolysaccharide membrane B. not motile C. absence of peptidoglycan D. parasitic in cytosol E. aerobic
The purpose of including an outgroup in the construction of a phylogeny is to __________.
a. indicate whether two characters are homologous b. determine dates of divergence between lineages c. determine which characters are ancestral d. increase parsimony e. All of the listed responses are correct.