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- 1. Multiple Choice
What is the definition of the phenotype?
The physical traits of an organism
The genetic makeup of an organism
The letters eg, Aa
How the genotype is expressed.
- 2. Multiple Choice
Which answer includes the dominant homozygous genotype?
AA
Aa
aa
- 3. Multiple Choice
What is the definition of an allele?
An allele is a variety of a gene.
An allele is the genetic makeup of an organism
An allele is another word for a gene.
- 4. Multiple Choice
There are many different alleles for fur color in cats. What is this an example of?
Codominance
Incomplete Dominance
Multiple Alleles
Polygenic Traits
- 5. Multiple Choice
Two parents are carriers of a genetic disease. This means they are ____.
homozygous
homozygous dominant
homozygous recessive
heterozygous
- 6. Multiple Choice
Hemophilia is a sex-linked trait. Are males or females more likely to exhibit this trait?
Males
Females
Females cannot have hemophilia.
Males cannot have hemophilia.
- 7. Multiple Choice
A man is homozygous dominant for a trait that is autosomal. He has two sons and a daughter. Do all three children exhibit the trait.
No, only sons exhibit the trait.
No, on the daughter exhibits the trait.
No, none of his children exhibit the trait.
Yes, all three children exhibit the trait.
- 8. Multiple Choice
Recessive allele will..
fully expressed in the phenotype of a heterozygote
partially expressed in the phenotype of heterozygote
partially expressed in the phenotype of homozygote
be fully expressed in the phenotype of a homozygote
- 9. Multiple Choice
Based on the diagram, how many genes are on the pair of chromosome?
8
2
4
5
- 10. Multiple Choice
Based on the diagram, how many loci are on the chromosome?
8
4
2
10
- 11. Multiple Choice
Choose the correct statement about genotype and phenotype
phenotype is the characteristics, while genotype is the genetic constituents that determine the phenotype.
genotype is the characteristics, while phenotype is the genetic constituents that determine the genotype
- 12. Multiple Choice
A test cross is ..
A cross between organisms of the same generation
A cross between an organism of recessive phenotype and another organism of dominant phenotype but of unknown genotype
A cross between an organism of dominant phenotype and another organism of dominant phenotype but of unknown genotype.
- 13. Multiple Choice
In a test cross between a tall plant and a dwarf plant, how do we determine that the genotype of the unknown plant is heterozygous?
if all of the offspring is tall
if most of the offspring is tall
if half of the offspring is tall
if all of the offspring is dwarf
- 14. Multiple Choice
A true breed is..
an organism that produces offspring of the same variety generation over generation, with homozygous genotype
an organism that produces offspring of the same variety generation over generation, with heterozygous genotype
an organism with homozygous dominant genotype only
- 15. Multiple Choice
Mendel's First Law is...
The law of independent Assortment
The law of segregation
- 16. Multiple Choice
Sperms can have
Only X chromosome
Only Y chromosome
Either X or Y chromosome
Either XX or XY chromosomes
- 17. Multiple Choice
What is the percentage of a woman having a male child?
25%
50%
75%
100%
- 18. Multiple ChoiceWhat are small stretches of DNA that code for traitsNucleusChromosomesGeneCentromeres
- Answer choicesTagsAnswer choicesTags