Genetics And Biotechnology! Trivia Questions Quiz
Understanding the human genetics can help us figure out most of the things that affect our bodies and even predict their occurrence. Are you a genetics student and think that you have what it takes to tackle this genetics and biotechnology questions? Do give it a try and get to see just how much you know about it. All the best!
- 1.
What are punnett squares used to show?
- A.
Result of meiosis
- B.
Probable outcome of a cross
- C.
Result of segregation
- D.
Actual outcome of a cross
Correct Answer
B. Probable outcome of a crossExplanation
Punnett squares are used to show the probable outcome of a cross. They are a visual tool that helps predict the possible combinations of alleles that offspring may inherit from their parents. By organizing and crossing the different alleles, Punnett squares provide a way to determine the likelihood of certain traits or genetic characteristics appearing in the offspring.Rate this question:
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- 2.
How are dominant traits denoted in a punnett square?
- A.
Capital letters
- B.
No letters
- C.
Lower case letters
- D.
None of the above
Correct Answer
A. Capital lettersExplanation
Dominant traits are denoted in a Punnett square by using capital letters. This is because dominant traits are represented by uppercase letters, while recessive traits are represented by lowercase letters. In a Punnett square, the capital letter represents the dominant allele, which is the allele that is expressed in the phenotype. Therefore, using capital letters is the correct way to denote dominant traits in a Punnett square.Rate this question:
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- 3.
How are recessive traits denoted in a punnett square?
- A.
Capital letters
- B.
One capital letter, one lower case letter
- C.
Lower case letters
- D.
None of the above
Correct Answer
C. Lower case lettersExplanation
Recessive traits are denoted in a punnett square using lower case letters. This is because lower case letters represent the alleles that are weaker or less dominant compared to their corresponding capital letters. In a punnett square, each parent's alleles are represented by one capital letter and one lower case letter, with the lower case letter denoting the recessive trait. Therefore, the answer is lower case letters.Rate this question:
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- 4.
Different forms of a gene are called
- A.
Hybrids
- B.
Dominant factors
- C.
Alleles
- D.
Recessive factors
Correct Answer
C. AllelesExplanation
Alleles are different forms or variations of a gene that occupy the same position or locus on a chromosome. They can be dominant or recessive, and individuals inherit two alleles for each gene, one from each parent. The combination of alleles determines the traits or characteristics expressed in an individual. Hybrids refer to the offspring resulting from the crossbreeding of two different species or varieties. Dominant and recessive factors are not the correct terms to describe different forms of a gene.Rate this question:
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- 5.
If a homozygous tall pea plant and a homozygous short pea plant are crossed
- A.
The recessive trait disappears
- B.
The offspring are of medium height
- C.
No hybrids are produced
- D.
All offspring are short
Correct Answer
A. The recessive trait disappearsExplanation
When a homozygous tall pea plant (TT) and a homozygous short pea plant (tt) are crossed, the offspring will all be heterozygous (Tt) for the height trait. In this case, the dominant trait (Tall) will be expressed, and the recessive trait (Short) will not be visible in the phenotype. Therefore, the recessive trait disappears in the offspring.Rate this question:
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- 6.
What is the phenotype of a punnett square?
- A.
Have two identical alleles
- B.
Physical characteristics
- C.
Genetic make-up of an organism
- D.
True-breeding for a particular trait
Correct Answer
B. pHysical characteristicsExplanation
The phenotype of a Punnett square refers to the physical characteristics that are expressed in an organism. It is the observable traits or features that result from the interaction between the alleles of a specific gene. The Punnett square is a tool used to predict the possible genotypes and phenotypes of offspring based on the genetic makeup of the parents. Therefore, the correct answer is "physical characteristics" because it accurately describes the phenotype of a Punnett square.Rate this question:
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- 7.
What is the genotype of a punnett square?
- A.
Have two identical alleles
- B.
Physical characteristics
- C.
Genetic make-up of an organism
- D.
True-breeding for a particular trait
Correct Answer
C. Genetic make-up of an organismExplanation
The genotype of a punnett square refers to the genetic make-up of an organism. It represents the combination of alleles that an organism possesses for a particular trait. This includes both the dominant and recessive alleles that determine the physical characteristics of the organism. The punnett square is a tool used to predict the possible genotypes and phenotypes of offspring in a genetic cross.Rate this question:
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- 8.
What does a monohybrid cross show?
- A.
The information of two traits
- B.
Multiple alleles
- C.
The information of one trait
- D.
The information of one trait
Correct Answer
C. The information of one traitExplanation
A monohybrid cross is a breeding experiment that involves the study of one specific trait. It shows the inheritance pattern of a single characteristic or trait, typically controlled by a single gene. This type of cross allows scientists to observe how traits are passed down from one generation to the next. By analyzing the offspring's phenotypes and genotypes, researchers can gain information about the inheritance patterns and predict the likelihood of certain traits appearing in future generations.Rate this question:
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- 9.
What is phenotype of a plant if you cross a (PP) purple tulip with a (Pp) blue tulip?
- A.
Purple tulip
- B.
Recessive
- C.
Incomplete dominance
- D.
Blue tulip
Correct Answer
A. Purple tulipExplanation
When you cross a (PP) purple tulip with a (Pp) blue tulip, the genotype of the offspring will be (Pp), with one dominant allele for purple and one recessive allele for blue. In this case, purple is the dominant phenotype, which means that it will be expressed in the offspring. Therefore, the phenotype of the plant will be a purple tulip.Rate this question:
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- 10.
What is the percentage that the child will be tall (Tt)? (Tt)tall (tt)short.
- A.
25%
- B.
50%
- C.
75%
- D.
100%
Correct Answer
B. 50%Explanation
The given question is asking for the percentage of chance that a child will be tall (Tt). Since the options provided do not give any information about the parents' genotypes, we can assume that the parents are both heterozygous (Tt). In this case, there is a 50% chance that the child will inherit the dominant tall allele (T) from one parent and a 50% chance that the child will inherit the recessive short allele (t) from the other parent. Therefore, the percentage that the child will be tall (Tt) is 50%.Rate this question:
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Mar 21, 2023Quiz Edited by
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Apr 16, 2009Quiz Created by
Biology09
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