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Pre AP Biology Unit 4 – Genetics

October 17, 2020Cherel Coach

Pre AP Biology Unit 4 – Genetics

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Question 1 of 19

1. Question
Which refers to having inherited different forms of a particular gene from each parent?
- Heterozygous
- Homozygous
- Dominant
- None of the above
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Question 2 of 19

2. Question
What gender has an X and a Y chromosome?
- Male
- Female
- Transgender
- all of the above
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Question 3 of 19

3. Question
How many generations are shown in this pedigree?
- 1
- 2
- 3
- 4
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Question 4 of 19

4. Question
How many kids did the mother and father from the first generation have?
- 2
- 4
- 5
- 6
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Question 5 of 19

5. Question
How many pairs of chromosomes does a human body have?
- 21
- 46
- 23
- None of the above
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Question 6 of 19

6. Question
What is a danger to a population that reproduces asexually?
- They can't reproduce fast enough
- Since they have the same immunity, one disease can wipe them all out.
- They have too much variety in their genes.
- They can become adapted to the environment
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Question 7 of 19

7. Question
Blood type in humans has three alleles: A, B, and O. A and B are both dominant to O. Therefore, there are two ways to have Type A blood, which of the following is the correct answer?
- AA and AO
- AB and AA
- BB and BO
- AB and BB
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Question 8 of 19

8. Question
If a couple who are both Type O marry and have three children, what are their bloodtypes?
- Type AB
- Type B
- Type A
- Type O
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Question 9 of 19

9. Question
Which refers to the state or condition that occurs when an individual inherits the same DNA sequence for a certain gene from both biological parents?
- Heterozygous
- Homozygous
- Dominant
- None of the above
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Question 10 of 19

10. Question
Which refers the physical look of a trait?
- Phenotype
- Recessive
- Genotype
- All of the above
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Question 11 of 19

11. Question
DD is an example of?
- homozygous recessive
- Homozygous dominant
- Dominant
- Recessive
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Question 12 of 19

12. Question
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
- 100% BB
- 75% BB and 25%Bb
- 50 % BB and 50% Bb
- 50% Bb and 50% bb
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Question 13 of 19

13. Question
What are the possible genotypes for this cross?
- TT = 25% Tt= 50% tt=25%
- TT= 75% tt = 25%
- Tt = 100%
- TT= 100%
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Question 14 of 19

14. Question
Which of the following is most likely to bring together two recessive alleles for a genetic defect?
- inbreeding
- hybridization
- genetic engineering
- transformation
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Question 15 of 19

15. Question
Which of the following can be observed in a karyotype?
- a change in a DNA base
- an extra chromosome
- alleles
- genes
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Question 16 of 19

16. Question
Human females produce egg cells that have?
- one X and one Y chromosome
- two X chromosomes
- one X or one Y chromosome
- one X chromosome
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Question 17 of 19

17. Question
What percentage of human sperm cells carry an X chromosome?
- 0%
- 25%
- 50%
- 100%
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Question 18 of 19

18. Question
Which of the following terms is defined as a change in a DNA sequence that affects genetic information?
- Mutation
- Karyotype
- Radiation
- Gamete
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Question 19 of 19

19. Question
What part of our cells holds our DNA?
- Cytoplasm
- cell membrane
- nucleus
- ribosomes
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