Cells are normally limited to one DNA repair system that corrects DNA mistakes.
Answer the following statement true (T) or false (F)
False
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Many fern gametophytes are hermaphrodytes, meaning they can produce both sperm and egg. Why is this necessary for a fern, but not for an angiosperm?
a. If a seed colonized a new habitat alone, it could still reproduce b. The gametophyte could produce multiple types of spores c. The gametophyte could produce multiple types of seeds d. If a spore colonized a new habitat alone, it could still reproduce e. Angiosperm gametes are already diploid
Which statement is true regarding a Barr body?
A) Barr bodies are found in the nuclei of female cells. B) Barr bodies are found in the nuclei of male cells. C) Barr bodies are found in the cytoplasm of male cells. D) Barr bodies are found in the cytoplasm of female cells. E) A Barr body is a condensed, inactive Y chromosome.
Which of the following cell-counting methods is capable of differentiating between living and dead cells?
A) turbidity measurement B) microscopic count C) dry weight D) Coulter counter E) flow cytometer
Which fungal phylum produces basidiospores?
A) Basidiomycota B) Ascomycota C) Zygomycota