7) A child has type AB blood. His mother has type A blood. Which of the followin

Question

7) A child has type AB blood. His mother has type A blood. Which of the following genotype/phenotype combinations IS NOT consistent with the biological father of this child? A) Type B, IBIB B) Type B, IO C) Type AB, TAI D) Type O, Toro E) All of the above are consistent with the phenotype of the child 8) Which of the following disorders is caused by an error in the process of meiosis? A. Marfan, syndrome C. Down Syndrome D. Turners Syndrome E. Cand D 9) A male bird would have which sex chromosomes? A. XY B. XY C. ZW E. None of the above, birds do not have sex chromosomes 10) Which of the following cytological processes leads to the production of a zygote from two haploid gametes? A) syngamy B)separation of chromatids during the second phase of meiosis C) meiosis D) pairing of homologous chromosomes E) crossing over

Explanation / Answer

7. D. Type O, IOIO.

Since the mother has A blood group, the allele for B has to come from the father. So the father can either have B blood type or AB blood type, but can never have O blood type.

10. A. Syngamy

Syngamy is the process where two haploid cells fuse together to form a diploid zygote.

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