Biology Mcqs XI [Variations and Genetics] Online Test 3

Biology Mcqs XII [Variations and Genetics] MCQS Online Test - 3

Biology Aptitude Test. 10 Questions from Chapter # 22 Variations and Genetics

Q1. Each human being possesses ________ pairs of chromosomcs.

• 21
• 22
• 23
• 24
• 26

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Q2. “Rh” stands for:

• Rhesus Factor
• Rhesus Gene
• Rhesus Pool
• Rhesus Heamatin
• Rhesus Type

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Q3. When a colour blind male marries a normal female:

• All the sons, will be normal & daughter colour blind.
• All sons are colour blind & daughters normal but carriers.
• All the daughters will be colour blinds & sons normal but cariers.
• All the sons and daughters will be colour blind.
• All the sons and daughters will be normal.

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Q4. In Erythroblastosis foctalis:

• Mother is Rh positive and father Rh negative
• Father is Rh positive and mother Rh negative
• Mother and father are both Rh positive but grand parents are Rh negative
• Mother and father both are Rh negative
• Mother and father both are Rh positive

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Q5. Suppressive influence of any genetic factor on another that is not its allele is:

• Epistasis
• Co dominance
• Incomplete Dominance
• Test Cross
• Pleiotropy

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Q6. Traits that are controlled by two or more than two separate pairs of genes, which manifest themselves in an additive fashion to yield continuously varying traits, this is:

• Epistasis
• Pleiotropy
• Polygenic Inheritance
• Intermediate Inhertiance
• Co-dominance

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Q7. The multiple effects of a single gene or allele are termed:

• Epistasis
• Pleiotropy
• Co dominance
• Test Cross
• Polygenic Inheritance

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Q8. ________ pairs of chromosomes found in Drosophila:

• Two
• Three
• Four
• Five
• Six

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Q9. The tendency of genes in a chromosome to remain together is called:

• Linkage
• Synapsis
• Pleiotropy
• Crossing over
• Hybridization

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Q10. During meiosis, the homologous chromosomes come together and form pairs, a process called:

• Linkage
• Synapsis
• Pleiotropy
• Corssing over
• Epistasis

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Variations and Genetics Test - 4

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