Bio 121 Final Exam 2 Questions And All Correct Answers.
0 view 0 purchase
Course
BIO 121
Institution
BIO 121
What are the three hypothesis of inheritance - Answer 1. There are alternative forms of "factors"(allels)
2. For each inherited trait, there are 2 allels from each parent
3. Sperm and egg only carrie one allel
4. When 2 allels are different in a pair, one is expressed
Principal of segregat...
Bio 121 Final Exam 2 Questions And All
Correct Answers.
What are the three hypothesis of inheritance - Answer 1. There are alternative forms of "factors"(allels)
2. For each inherited trait, there are 2 allels from each parent
3. Sperm and egg only carrie one allel
4. When 2 allels are different in a pair, one is expressed
Principal of segregation - Answer When two allels in a pair are different, 1 is fully expressed while the
other is masked
Locus - Answer Location on a chromosome
Homozygous - Answer Pair of the same allels (RR) or (rr)
Heterozygous - Answer Pair of two different allels (Rr)
Phenotype - Answer Physical expressed traits
Genotype - Answer Actual genetic makeup of an organism
What do you do if there are 4 allels that segregate independently - Answer Dihybrid cross
Probability - Answer Outcome of that event/ total # of possible outcomes
Incomplete dominance - Answer F1 hybrids are intermediate between parental genotype (pink flowers)
Complementation - Answer One of the two pairs of allels needs to be homozygous dominant to express
phenotype
, Epistasis - Answer One allel pair masks the effect of the other pair (lab dogs)
Modifier gene - Answer Controlled by 1 locus
Polygenics of quantitative traits - Answer Controlled by 5-10 loca,(height/skin/hair color)
Pleitrophy - Answer Single gene has multiple phenotypic effects characteristics (deafness in white cats)
Penetrance - Answer % of individuals carrying a gene and expressing phenotype
Expressivity - Answer Degree to which a gene is expressed(mild or severe)
Epigenetics - Answer When experiences change the way DNA is expressed, can be passed to offspring.
Concordance rates - Answer Probability that a pair of individuals both have a certain trait
Autosomal recessive - Answer Harmful gene Inherited by having both carrier parents
Autosomal dominance - Answer Harmful dominant allel typically late onset, expressed later in life.
Sex linked - Answer Locus is on X and Y chromosomes, will affect males more than females
What neucleotides are in DNA - Answer Adenine-thymine(uracil)
Granine(cytosine)
Transcription - Answer When mRNA records the DNA template.
Translation - Answer The decoding of mRNA into polypeptides
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TestSolver9. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.69. You're not tied to anything after your purchase.
