Eukaryotic cell division consists of interphase and cell division. Explain what happens in the three parts of interphase (G1, S, and G2 )
What will be an ideal response?
In the S stage, DNA synthesis occurs. Chromosomes duplicate, and sister chromatids are formed. The part prior to S is G1, in which cell growth occurs. DNA synthesis is followed by G2, in which the cell further grows, now with double chromatid chromosomes in its nucleus.
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Auditory information travelling from the cochlea toward the brain passes through several structures. Which order is correct?
a. cochlea to primary auditory cortex to the medulla to the pons b. cochlea to cortex pons to medulla to the primary auditory cortex c. cochlea to medulla to pons to primary auditory d. cochlea to medulla to primary auditory cortex to the pons
Which of the following is thought to be a promising means of improving conditions for patients with
type-2 diabetes?
a. injections with myostatin b. increasing muscle mass c. ketoacidosis d. injections with acetylcholine e. increasing consumption of simple carbohydrates
The only animals that lack tissues are
A) sponges. B) cnidarians. C) nematodes. D) chytrids. E) chordates.
Consider the following information for a dihybrid cross. The dominant allele F codes for freckles, whereas the recessive allele f codes for no freckles. The dominant allele E codes for long eyelashes, whereas the recessive allele e codes for short eyelashes. Both parents have the genotypes of ee and Ff.
Indicate the following: (1 ) the phenotype of both parents, (2 ) the possible gametes that each parent can make, (3 ) all of the possible phenotypes for the offspring, and (4 ) the phenotypic ratio obtained after the Punnett square is drawn.