The following is a portion of one half of a DNA strand: CGGATAACGT. If this strand
undergoes transcription and translation, the end result is
a. a protein.
b. GCCTATTGCA.
c. GCCUAUUGCA.
d. CGGAUAACGU
A
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Evaluate this statement: crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.
A. False, random fertilization also creates genetic variation by creating hybrid chromosomes B. True, independent assortment and random fertilization create genetic variation by shuffling chromosomes instead C. False, independent assortment and random fertilization also create genetic variation by creating hybrid chromosomes D. False, independent assortment also creates genetic variation by creating hybrid chromosomes
The site on a chromosome where microtubules attach during cell division is the
A) chromatid. B) centromere. C) histone. D) telomere. E) locus.
Which of the following statements relate to natural selection?
A) Populations experience differential reproductive success. B) Breeding is done intentionally with the intent to increase the frequency of desired traits. C) Variation within a population is heritable. D) Populations experience competition for resources. E) The variations in a population make no difference in terms of reproductive success.
Newton's 3rd law of motion
What will be an ideal response?