A person who is 46, XX is a
A) chromosomally normal female.
B) chromosomally abnormal female.
C) chromosomally normal male.
D) chromosomally abnormal male.
A) chromosomally normal female.
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The Earth formed approximately
(a) 4600 years ago. (b) 1 million years ago. (c) 1 billion years ago. (d) 4.6 billion years ago.
The amnion creates an aquatic environment for developing embryos
Indicate whether the statement is true or false
Generally speaking, fluids in plants are
A) pushed through phloem with a pressure gradient and pulled through xylem. B) pushed through xylem with a pressure gradient and pulled through phloem. C) pulled through both xylem and phloem. D) actively pumped throughout the plant.
You prepare the first ever karyotype of an endangered species of frog. Upon examination you find that all the chromosomes are metacentric. This is going to make it difficult to identify
A. both the p and q arms of the chromosome. B. if the chromosomes are telocentric. C. which is the p arm of the chromosome. D. which is the q arm of the chromosome. E. the unique G banding for each chromosome.