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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
What is an allele?	letters that represent a gene
In Mendelian genes, are alleles a mix of upper and lower or two different letters?	upper lower
Name the law: alleles separate during the formation of sex cells	law of segregation
What is this called?: Aa	genotype
True or False: Just because a gene is dominant, it does not mean that gene is common	true
What is this?	punnet square
Which PHENOTYPE is dominant? Purple or white?	purple
Is PHENOTYPE the physical expression or the combination of alleles?	physical
True or False: a child can express a recessive trait even if the parents do not have the same phenotype	true
True or False: two organisms can have the same PHENOTYPE but different genotypes	true
What version of the genotype do genotypic ratios start with?	most dominant
What version of the phenotype do phenotypic ratios start with?	dominant
What is this?	dihybrid cross
What is this process?	foil
What is foiling for when doing a dihybrid cross?	possible gamete
What is the name of the law that explains gene behavior during gamete formation?	law of independent assortment
Which law is shown first? Independent assortment or segregation?	independent assortment
How are the results of a cross written?	ratio
Are the axes the parents or offsprings genotypes?	parents
Is it possible for an organism to be heterozygous and express a recessive trait?	no
Two types of non-Mendelian genes are...	incomplete and codominant
When both alleles are dominant so they are equally...	expressed
Is the picture showing co-dominance or incomplete dominance?	codominance
Is the picture showing co-dominance or incomplete dominance?	incomplete
When one allele is not completely dominant over another resulting in the two...	mixing
Do non-Mendelian genes have two of the same letter or two different letters?	different letters
One gene that has multiple letters	multiple alleles
What is an example of a multiple allele gene?	blood type
Traits controlled by two or more genes resulting in many phenotypes	polygenics
Certain genes, such as color blindness, is what type of gene	x linked
What traces a family’s genotypes and phenotypes	pedigree
Females can be heterozygous carriers for a recessive X linked traits but not...	males
How to solve for an unknown pedigree?	dominant recessive, x or autosomal
Is expressing an X-Linked trait more common in women or men?	men
Can men be carriers for X-Linked traits?	no
What is this?	pedigree
What does it mean if a symbol is half shaded?	carrier
If two parents are NOT shaded whereas one offspring is, does this make the tracked gene is recessive or dominant?	recessive
If there is an error in X-Linked passing, what does that mean?	not x linked
What tool is used that allows scientists to compare & identify an individual’s DNA pattern	gel electrophoresis