The rostral neuropore closes at ____ while the caudal neuropore closes at ____.
A. Day 20-21; Day 23-24
B. Day 22-23; Day 25-26
C. Day 24-25; Day 27-28
D. Day 26-27; Day 29-30
E. Day 28-29; Day 31-33
Answer: C. Day 24-25; Day 27-28
Biology & Microbiology
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Chromosomal sex of a fetus with the sex chromosomes XXY is almost always ____________________
Fill in the blank(s) with correct word
Biology & Microbiology
RNA differs from DNA in that
A) it is usually single-stranded. B) it is usually double-stranded. C) it has thymine instead of uracil. D) it has deoxyribose instead of ribose.
Biology & Microbiology
In situ mRNA techniques are powerful and can be run at almost any time, in any condition, because bacterial mRNAs are so stable.
Answer the following statement true (T) or false (F)
Biology & Microbiology
How many different kinds of nucleotides are in DNA?
A) Four B) Two C) Hundreds or thousands D) Millions
Biology & Microbiology