Almost all chromosomally abnormal embryos and fetuses are ____________________ as pregnancy progresses
Fill in the blank(s) with correct word
eliminated
miscarried
spontaneously aborted
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An R loop experiment was performed on two different mRNA's. The first showed one R loop, while the second showed two R loops separated by a region of double-stranded DNA. What is the composition of these two mRNA's?
A. The first contains no introns and the second two introns B. The first contains no introns and the second one intron C. The first contains one intron and the second two introns D. The first contains two introns and the second one intron
Graduate students studying population genetics are assigned the task of determining the allele frequencies of gene Z in a population. After their study is completed, the graduate students report that the frequency of allele ZA is 67%, and the frequency of allele ZB is 23%. What conclusion can you draw from these results?
a. The studied population is in Hardy-Weinberg equilibrium. b. The sample size in this study was too small to produce accurate results. c. At least one more allele of gene Z exists in the studied population. d. The studied population is evolving toward a fully homozygous genotype.
Rainfall is greater in temperate deciduous forests than in temperate shrublands and grasslands
Indicate whether the statement is true or false
Refer to Figure 40-3. In which portion of the bone would red blood cell production occur?
a. B b. C c. J d. H e. I