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Principles Of Genetics Quiz 31 (30 MCQs)

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1. Organisms that have two identical alleles for a particular trait are said to
2. How is Huntington's Disease inherited?
3. A homozygous recessive genotype is shown by which of the following? (3B1)
4. In pea plants, green is dominant to yellow. A green pea plant (Gg) is crossed with a yellow pea plant (gg). What are all the possible genotypes that result from this set of parents?
5. A trait that is always expressed if present is .....
6. Results from a crosses between parents with different traits
7. The color black is dominant in guinea pigs. The phenotypes of homozygous black guinea pigs and heterozygous black guinea pigs are:
8. Through conducting many experiments with pea plants, Gregor Mendel discovered three basic principles that guide the inheritance of traits. Which concept is a part of his explanation?
9. In rats, black coat color (B) is dominant to white coat color (b). When a black rat was crossed with a white rat, some white offspring occurred. What was the genotype of the black rat?
10. Sex-Linked traits affect more
11. The letter P in a "P" Generation stands for:
12. Likelihood that a particular event will occur is known as
13. Mendel's principles of genetics apply to which organisms?
14. What are sex cells that contain only one set of chormosomes?
15. In Andalusian fowls, black individuals (BB) and white individuals (bb) are homozygous. Heterozygous individuals are grey (Bb). Cross a black fowl with a white fowl. What is the phenotype ratio?
16. A heterozygous tall pea plant is crossed with a short plant. The probability that an F1 plant will be tall is
17. What does the prefix homo- in homozygous mean?
18. What does a Punnent square determine?
19. In chickens, feather color is codominant. If a black chicken BB is mated with one that is black and white (BW) what are the chances of having a chicken that is black and white?
20. Reduction division that produces gamete
21. Multiple allelism is due to
22. Two heterozygous people marry. Each has a dominant allele C for curly hair and a recessive allele c for straight hair. Using a Punnette square, determine the phenotypic ratio, curly hair:straight hair, in their children
23. What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
24. In humans, blood types exhibit both dominance, codominance, and multiple alleles. The following genotypes are listed for each blood type.AA or AO= Type A OO= Type O BB or BO= Type BAB= Type AB ..... Parent 1:Homozygous for Type A BloodParent 2:Type O BloodWhat is the probability of getting type A?
25. Homozygous is when .....
26. When the genotype consists of a dominant and a recessive allele, the phenotype will be like the ..... allele.
27. An allele represented by a lower case letter. The allele that masked or hidden.
28. Why did Mendel conduct experiments on pea plants
29. Identify the homozygous recessive genotype:
30. If two parents who are homozygous recessive for a certain trait are crossed, what is the probability of having a child who does not have their trait?
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