Referring to the illustration, how can there be two non-recombinant chromosomes and two recombinant chromosomes?
a. Recombination doubles the amount of chromosomes.
b. Crossing over results in mutations that create more genetic material.
c. Chromosomes during this stage are replicated with two matching sister chromatids.
d. These are chromosomes before fertilization so they are haploid.
c. Chromosomes during this stage are replicated with two matching sister chromatids.
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What happens when a photosystem absorbs energy? a. Protons are ejected and enter an electron transfer chain
b. Carbon dioxide is formed. c. Glucose is broken down. d. Electrons are ejected and enter an electron transfer chain. e. Electrons are absorbed and released from the electron transfer chain.
Luteinizing hormone is considered a gonadotropin because of which one of the following reasons?
A) It stimulates the growth and development of gonads, but only in females. B) It stimulates the growth but not the development of gonads in males. C) It promotes the growth of reproductive organs in both males and females. D) It functions to complement the activity of TSH. E) It triggers the production of gonadotropin hormones.
Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are
heterozygous (Bb)? a. BB and Bb b. BB, Bb, and bb c. BB only d. Bb only e. bb only
What is the role of van der Waals interactions in biological molecules?
Fill in the blank(s) with the appropriate word(s).