What type of blood cell engulfs bacteria and other cellular debris?
1.Erythrocytes
2.Lymphocytes
3.Monocytes
4.Phagocytes
4
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Imagine that you are searching for the gene associated with nail-patella syndrome, a dominant genetic disorder that causes developmental abnormalities. In a large pedigree you discover an association between nail-patella syndrome and a genetic marker that
occurs in two different alleles, A and B. Fifteen individuals within this pedigree have nail-patella syndrome and are A/B heterozygotes for the marker. Thirty individuals within this pedigree don't suffer from nail-patella syndrome and are homozygous for the A marker allele. One individual within this pedigree has nail-patella syndrome and is also homozygous for the A marker allele. The most likely explanation for this exceptional individual is that _____. A) a new mutation converted the disease-causing allele to the wild-type form B) a new mutation converted the B allele of the marker to the A form C) the exceptional nail-patella individual is haploid D) recombination occurred between the nail-patella gene and marker locus in one of the parents of the exceptional individual
The cell body of the second neuron of the parasympathetic division is located outside of the CNS
Indicate whether the statement is true or false.
Treponema pallidum
A. can cross the placenta. B. has a hooked tip to attach to epithelium. C. is transmitted by direct sexual contact. D. has humans as the sole reservoir. E. All of the choices are correct.
T or F: The epiphysis surrounds the bone marrow cavity
What will be an ideal response?