Which of the following are incorrectly matched for a single-factor cross?
A. P generation / true breeding
B. F1 generation / monohybrid
C. F2 generation / result of F1 cross
D. F1 generation / result of P cross
E. F2 generation / result of P cross
E. F2 generation / result of P cross
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Some cells retain the capacity to divide throughout their life cycle, whereas others do not divide in adulthood. Give one example of each type
What will be an ideal response?
Quaternary structure of a protein refers to ________
A) the sequence of amino acids in a polypeptide B) alpha-helical or beta-sheet arrangements of protein structure C) three-dimensional coil of a polypeptide around itself D) the association of multiple polypeptide subunits to form a functional protein E) the number of amino acids in a polypeptide chain
Which of the following is NOT true about exons?
a. They are retained sequences in the final RNA product. b. They have a 5? and a 3? end. c. They are removed when the primary transcript is processed. d. Their sequences are in the same order in the gene and in the RNA. e. All of the above are true
Although the most frequent forms of Down syndrome are caused by a random error, nondisjunction of chromosome 21, Down syndrome occasionally runs in families. The cause of this form of familial Down syndrome is ________
A) a maternal age effect B) a translocation between chromosome 21 and a member of the D chromosome group C) an inversion involving chromosome 21 D) a chromosomal aberration involving chromosome 1 E) too many X chromosomes