Mendel’s Pea Shape and Color Molecular Explanation
27 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the R allele encode?

  • Chlorophyll
  • Starch branching enzyme (Sbe1) (correct)
  • Sucrose
  • Stay green enzyme (Sgr)

What is the consequence of the r allele not making Sbe1?

  • Sucrose and unbranched starch build up, leading to wrinkled peas (correct)
  • Increased production of chlorophyll, leading to greener peas
  • Chlorophyll is not broken down and the peas remain green
  • Reduced production of starch, leading to smoother peas

Which gene determines the Stay green enzyme (Sgr)?

  • r allele
  • R allele
  • Y allele (correct)
  • Unspecified allele

What is the general principle about the relationship between a specific gene and its encoded protein?

<p>A specific gene determines a specific protein, whose activity may affect the phenotype (D)</p> Signup and view all the answers

What is the expected outcome of a dominant allele?

<p>It usually determines a normally functioning protein (D)</p> Signup and view all the answers

What effect does the y allele have on chlorophyll breakdown?

<p>It has no effect on chlorophyll breakdown (A)</p> Signup and view all the answers

What does the y allele fail to make?

<p>Stay green enzyme (Sgr) (A)</p> Signup and view all the answers

2.21

<p>option1 (D)</p> Signup and view all the answers

question1

<p>option1 (D)</p> Signup and view all the answers

question1

<p>option1 (A)</p> Signup and view all the answers

question1

<p>option1 (C)</p> Signup and view all the answers

question1

<p>option1 (D)</p> Signup and view all the answers

What type of dominance is exhibited when the F1 hybrids display traits of both parents?

<p>Codominance (A)</p> Signup and view all the answers

Which phenomenon results in all progeny being spotted and dotted?

<p>Codominance (C)</p> Signup and view all the answers

What controls the type of sugar polymer on the surface of red blood cells?

<p>Gene I (C)</p> Signup and view all the answers

What type of alleles result in individuals having both A and B sugars on their red blood cells?

<p>Two alleles with different sugars (C)</p> Signup and view all the answers

What determines the type of dominance (complete, incomplete dominance, codominance)?

<p>The type of proteins encoded (D)</p> Signup and view all the answers

Which type of dominance relation does not affect the transmission of alleles?

<p>Complete dominance (A)</p> Signup and view all the answers

What is more complex according to McGraw Hill 24?

<p>Interpretation of phenotype/genotype relations (B)</p> Signup and view all the answers

Which of the following is an example of a disease caused by a recessive allele?

<p>Marfan syndrome (A)</p> Signup and view all the answers

What is the frequency of cystic fibrosis in humans?

<p>1/2,500 (D)</p> Signup and view all the answers

In pedigrees with dominant traits, what pattern of inheritance is typically observed?

<p>Vertical (C)</p> Signup and view all the answers

Which disease exhibits a dominant pattern of inheritance?

<p>Neurofibromatosis type I (C)</p> Signup and view all the answers

What is the recurrence risk for each sibling of the proband in autosomal recessive inheritance?

<p>25% (B)</p> Signup and view all the answers

Which of the following indicates that dominance is not always complete?

<p>Incomplete dominance (C)</p> Signup and view all the answers

What phenotype ratios reflect the genotype ratios in incomplete dominance?

<p>1:2:1 (A)</p> Signup and view all the answers

Which disease is caused by a completely dominant allele?

<p>Marfan syndrome (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser