Of the organisms studied, which group has the
most species found to be threatened?
a. fishes
b. angiosperms
c. mammals
d. amphibians
e. insects
B
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A male is heterozygous for the trait that produces freckles on the skin, and he has freckles. If he marries a woman who is also heterozygous for freckles, ______ percent of their children will be freckled and __________ percent of their children will be heterozygous.
A. 100% freckled, 100% heterozygous B. 75% freckled, 50% heterozygous C. 75% freckled, 25% heterozygous D. 50% freckled, 50% heterozygous E. 100% freckled, 75% heterozygous
Because their host cells have dsDNA genomes, viruses with RNA genomes cannot rely on host cell enzymes for genome replication or mRNA synthesis.
Answer the following statement true (T) or false (F)
Asexual reproduction _____
a. results from fertilization
b. produces genetic clones c. is more similar to meiosis than mitosis d. leads to increased genetic variation in offspring e. involves crossing over
A villus are indicated by the letter ____
a. A b. B
c. C d. D e. E