Biology (Raven), 10th Edition

Chapter 13: Chromosomes, Mapping, and the Meiosis–Inheritance Connection

Pre-Test

1
In fruit flies, bar eyes are sex-linked and dominant to non-bar eyes: XB = bar, Xb = normal (non-bar-eyed). If a heterozygous bar-eyed female is mated to a non-bar-eyed male, what proportion of the offspring will be bar-eyed?
A)All will be bar-eyed.
B)None will be bar-eyed.
C)One-half of the males will be bar-eyed and all of the females will be bar-eyed.
D)One-half of the females will be bar-eyed, and one-half of the males will be bar-eyed.
E)One-fourth of the males will be bar-eyed and all of the females will be bar-eyed.
2
Which of the following conditions is carried on a sex chromosome?
A)Hemophilia
B)Sickle-cell disease
C)Cystic fibrosis
D)Huntington disease
E)Phenylketonuria
3
Mitochondria have their own circular chromosome separate from the chromosomes in the nucleus. Inheritance of the genes carried on the mitochondrial chromosome shows what features?
A)The genes are said to be maternally inherited.
B)Only females express these genes.
C)Only males express these genes.
D)Males and females are equally able to transmit these genes.
E)Females cannot transmit these genes.
4
Red-Green color blindness is a(n) __________ disease.
A)sex-linked
B)autosomal dominant
C)polygenic
D)autosomal recessive
E)environmental
5
If a girl is color blind (sex-linked recessive trait),
A)she received a color-blind allele from her mother.
B)she received a color-blind allele from her father.
C)all her sons will be color blind.
D)her father is color blind.
E)All of the choices are correct.
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