MDCAT Biology MCQs

Correct answer A. Men have only one X chromosome, so a single recessive allele is expressed

Correct answer B. clotting factor VIII

Correct answer D. 1/2

Correct answer D. All daughters carriers and all sons normal

Correct answer B. 1/2

Correct answer A. an affected father through his carrier daughter to his grandson

Correct answer B. from a father to all of his sons

Correct answer B. Oxidoreductases

Correct answer C. transferases

Correct answer D. an isomerase

Correct answer C. Ligases (synthetases)

Correct answer D. water and oxygen

Correct answer C. hydrochloric acid

Correct answer A. the garden pea, Pisum sativum

Correct answer A. Seven

Correct answer A. separate so that each gamete receives only one allele

Correct answer C. homologous chromosomes during anaphase I of meiosis

Correct answer D. the random orientation of homologous pairs at metaphase I

Correct answer B. 3 : 1

Correct answer A. 1 : 2 : 1