PPSC FPSC KKPSC BPSC SPSC Lecturer Botany MCQs Test No. 66

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There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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Test Instructions:-
Test NameLecturer Botany
SubjectBotany Test 66
Test TypeMCQs
Total Questions25
Total Time20 Minutes
Total Marks100

You have 20 minutes to pass to the quiz.

Lecturer Botany Online Test No. 66

1 / 25

Tay-Sachs disease runs in Seema's family.On a family pedigree, she saw a half darkened circle. This represented:

2 / 25

Which of the following is correct with regard to aneuploidy?

3 / 25

Which of the following is not needed for DNA transcription?

4 / 25

During meiosis, the chromatids become daughter chromosomes during which stage?

5 / 25

Which of the following chromosomal alterations would you expect to have the most drastic consequences?

6 / 25

The offspring of two parents that are heterozygous for a given trait have a __ percent chance of being homozygous for that trait

7 / 25

On a pedigree tracing the inheritance of PKU , a horizontal line joins a black square and a half- black circle. What fraction of this couple's children would you expect to suffer from PKU?

8 / 25

Street trees ( those lining the roads) are generally male. This reduces the cleanup of the streets because the trees only produce  pollen, not fruits. Therefore, the kinds of trees that are normally chosen as street trees are:

9 / 25

A ____ made inside the nucleus of a cell associates with proteins to form ribosomes.

10 / 25

Which of the following would have the same base sequencing in their DNA?

11 / 25

A heritable feature is a___ and may have two or more variants called___.

12 / 25

A heritable feature is a___ and many have two or more variants called____.

13 / 25

___ portions of chromosomes that stain lightly and only partially condensed:

14 / 25

During the transcription of a certain protein, an extra cytosine was placed into a gene region, throwing off the correct amino acid sequence. What type of mutation occurred?

15 / 25

If you were to discover a flower that was small, white and heavily scented, its most likely pollinator would be:

16 / 25

Those mutations that occur by environmental damage or mistakes during DNA replications are:

17 / 25

Flowers must:

18 / 25

Those mutations that arise in the absence of known mutagen are known:

19 / 25

The most common lethal genetic disease in the United States is:

20 / 25

You have been asked to collect plant Sperm for a new plant breeding program involving in vitro fertilization. Which of the following tissues would be a good source of sperm?

21 / 25

If a piece of DNA breaks off a chromosome and attaches itself to a nonhomologous chromosome at another location, what type of Change has occurred?

22 / 25

Proteins are made of amino acids linked together by specific bonds called:

23 / 25

When cancer cells gain the ability to move independently and invade other tissues, they are said to have:

24 / 25

If you performed a laboratory analysis of DNA , you would find that the amount of adenine is ____ the amount of thymine.

25 / 25

Changes in the nucleotide sequence of DNA which are not passed to offspring occur in:

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