Sex-linked traits:
a. are controlled by genes on the X and Y chromosomes.
b. are only inherited from the father.
c. appear more frequently in females if they are recessive.
d. cannot be visualized using a pedigree.
e. are only controlled by genes on the Y chromosome.
Ans: a. are controlled by genes on the X and Y chromosomes.
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In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. What purpose must this serve?
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Amoebozoans move by means of flagella
_______________ Indicate whether the statement is true or false.
The earliest fish are represented today by:
a. hagfish. b. lamprey. c. sharks. d. both a and b. e. both b and c.
In plants the fertilized egg develops into a multicellular __________ (young plant) within a female
gametangium. a. zygote b. seed c. embryo d. endosperm e. cotyledon