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MDCAT Biology Chapter 9 Life process in Animals & Plants Online Test MCQs With Answers

Question # 1

Homogenetistic acid is oxidized rapidly when exposed to air, turning the urine

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White

Purple

Blue

Black

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Question # 2

Genes for alpha and beta chains of hemoglobin are found on which chromosomes?

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Chromosome 16 alpha; chromosome 11 beta

Chromosome 11 alpha; chromosome 16 beta

Chromosome 11

Chromosome 16

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Question # 3

When a single gene has multiple phenotypic effects, the phenomenon is called:

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condominance

epistasis

pleiotropy

sex-linkage

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Question # 4

What are chances for having Rh-ve baby if one parent is Rh+ve and (homozygous) and other is Rh-ve

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25%

50%

100%

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Question # 5

Mutatuons are inherited only if they occur in the

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Gland cells

Gametes

Muscle cells

Somatic cells

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Question # 6

What happens when both alleles of a gene pair independently express in a heterozygote?

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dominance

incomplete dominance

over dominance

codominance

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Question # 7

Degenerated testes are present in abdomen in which of these cases

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Down's syndrome

Klinefelter's sysndrome

Turner's syndrome

Testicular ferminization

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Question # 8

A heterrozygote offspring quantitatively exceeds the phenotypic expression of both the homozygote parents due to:

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dominance

incomplete dominance

over dominance

codominance

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Question # 9

Color blindness, haemophilia and gout form linkage group onj

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Chromosome 9

Chromosome 19

x-chromosome

y-chromosome

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Question # 10

SRY in located at the tip of

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Short arm of X-chromosome

Short arm of Y-chromosome

Long arm of Y-chromosome

Long arm of X-chromosome

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Question # 11

A carrier mother for colour blindness does not have

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A normal boy

A carrier boy

A colour blind boy

A normal daughter

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