A child has O type blood. The mother has AB blood type and the father has A blood type. Which is true?
a. This can't be biological mother
b. This can't be biological father
c. The children only have AB from these parent
d. Neither of these can be the child's parents
Answer: a. This can't be biological mother
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A homologous chromosome pair is best described as two chromosomes that have _______
A. the same genes in the same order but possibly with different alleles of some of the genes B. the same alleles of the same genes in the same order C. the same genes possibly arranged in a different order with potentially different alleles of some of the genes D. different alleles of the same genes arranged in a different order E. identical sequences of nucleotides
Goiter is a disease characterized by an enlarged thyroid gland. Which of the following either leads to or is an outcome of the disease?
A. iodine deficiency in the diet B. reduced levels of T3 in the blood C. reduced levels of T4 in the blood D. excessive thyroid-stimulating hormone production E. All of the choices are correct.
Rasheed suffers from terrible migraine headaches. They are likely caused by
A) at least three genes and perhaps environmental triggers, such as foods. B) a single gene but no environmental influences. C) a missing chromosome. D) poor diet and susceptibility to infection.
An F1 organism is always homozygous
Indicate whether the statement is true or false.