A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial

wings and black bodies (vvbb). This type of cross is known as a:
a. monohybrid cross.
b. dihybrid cross
c. polytropic cross.
d. true breeding cross.
e. chromosomal cross


b

Biology & Microbiology

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Indicate whether the statement is true or false.

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Insulin affects the

a. secretion of saliva. b. storage of proteins. c. secretion of pancreatic juices. d. metabolism of sugar. e. utilization of fat reserves

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During transcription of the trp operon, pairing of regions 2 and 3 in the leader peptide mRNA creates a(n) ________ signal

A) continuous B) termination C) antitermination D) induction E) repression

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Which of the following is the main component of cell membranes?

A. phospholipids B. steroids C. cholesterol D. sucrose E. triglycerides

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