DNA sequences comprising open reading frames (ORFs) correspond to the coding regions of genes called ____________________
Fill in the blank(s) with correct word
exons
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For water fleas of the genus Daphnia, switching from a pattern of asexual reproduction to sexual reproduction coincides with _____
A) environmental conditions becoming more favorable for offspring B) greater abundance of food resources for offspring C) periods of temperature or food stresses on adults D) completion of puberty E) exhaustion of an individual's supply of eggs
What is the minimal number of tRNAs that can be used to recognize all of the codons for threonine?
A. 1 B. 2 C. 3 D. 4
Individuals with extra or missing copies of one or more chromosomes are called ____
a. polyploids b. haploids c. aneuploids d. euploids e. diploids
Two Martians fall in love and marry. One Martian is homozygous for red eyes and the other is heterozygous. The recessive eye color is purple. What is the probability that they will have a child with purple eyes?
a. 1/1 b. 1/2 c. 1/4 d. 3/4 e. 0