8. The term hemizygous is used to describe allele. who possess a single copy of

Question

8. The term hemizygous is used to describe allele. who possess a single copy of a recessive A) females; autosomal B) males; autosomal C) females; X-linked D) males; X-linked E) none of the above-hemizygous is not a legitimate genetics term 9. A microscopic mouse egg is a single cell, but the large eggs of the ostrich and emu is composed of many cells. A)TRUE B) FALSE 10, Because they are diferent szes and have very diferen sequences,the Xand y chromasomes do nes pair up during Meiosis. A) TRUE B) FALSE 11. In the Xx-XY sex determination system the zz.zw system the is the heterogametic sex is the heterogametic sex, and in the A) male, male B) female; female C) male; female D) female; male 12. Sex chromosome anomalies such as poly X, Klinefelter, and Turner Syndromes are a result of A) reduced penetrance 8) chromosomal nondisjunction C) genomic imprinting D) genetic epistasis E) genetic maternal effect 13. Poly X, Klinefelter, and Turner Syndromes all have a relatively frequent occurrence of about 1 in A) 100-500 B) 500-2,500 C) 5,000-10,000 D) 20,000-50,000 E) 50,000-100,000 14. Turner and Klinefelter individuals usually exhibit more than 5 X chromosomes often exhibit A) fertility and normal cognitive ability, sterility and cognitive deficits; B) sterility and normal cognitive ability; fertility and cognitive deficits C) sterility and cognitive deficits; fertility and normal cognitive ability while Poly X individuals possessing D) fertility and cognitive deficits;; sterility and normal cognitive ability E) none of the above in order for a 15. Chromosomal nondisjunction must occur during formation of in the normal XY man and a normal XX woman to produce a Klinefelter child with the following sex chromosome constitution: XXY A) sperm; father B) egg: mother C) Neither, this is not how Klinefelter children are produced. D) It could have occurred during either the production of the esg in the mother or during production of the sperm in the father.

Explanation / Answer

8. D. Male; X linked.

9. TRUE.

10. B. FALSE.

11.C. MALE; FEMALE.

12. B. Chromosomal nondisjunction.

13.B. 500-2500.

15. D.

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