In a cell that has a diploid number of 8 chromosomes, how many chromatids will be present at the beginning of mitosis?
A) 8
B) 16
C) 32
D) 4
E) 2
B
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Which of the following statements about a carbon-carbon double bond is correct?
A. Each of the two carbons is capable of bonding to three other atoms. B. The double bond allows free rotation of the molecule at the bond position. C. The double bond is longer than a corresponding carbon-carbon single bond. D. Double bonds can be found in cyclical structures. E. None of these statements about carbon- carbon double bonds is correct.
Square planar arrangement of cells that forms when round bacteria remain attached to each other during reproduction are called
A. streptococci. B. sarcinae. C. tetrads. D. staphylococci.
Which of the following is not a member of the phylum Platyhelminthes?
a. fluke b. tapeworm c. flatworm d. ribbon worm
A cross was made between homozygous wild-type female Drosophila and yellow-bodied male Drosophila. All of the resulting offspring were phenotypically wild type
Offspring of the F2 generation had the following phenotypes: Sex Phenotype Number male wild 96 male yellow 99 female wild 197 Based on this information: (a) Is the mutant gene for yellow body behaving as a recessive or dominant gene? (b) Is the yellow locus on an autosome or on the X chromosome?