Genetics Practice Exam
16 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 is the probable genetic makeup of a brown-eyed father and a blue-eyed mother with all brown-eyed children?

  • BB, bb, Bb (correct)
  • Bb, bb, BB
  • BB, bb, BB
  • Bb, bb, bb

If a person has the genotype Bb, they have blue eyes.

False (B)

What base pairs with guanine (G) according to the base pairing rule?

C (cytosine)

The DNA structure resembles a ______.

<p>double helix</p> Signup and view all the answers

How many chromosomes are in human sex cells?

<p>23 (D)</p> Signup and view all the answers

Transcription is the process of copying the DNA message.

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

What is the term for alleles that are the same, such as BB?

<p>Homozygous Dominant</p> Signup and view all the answers

Match the following genetic terms with their definitions:

<p>Homozygous Dominant = Same alleles that are both dominant Homozygous Recessive = Same alleles that are both recessive Heterozygous = Different alleles</p> Signup and view all the answers

What is the definition of translation in a biological context?

<p>Reading the genetic codes to make amino acids (A)</p> Signup and view all the answers

If dimples (D) are dominant to non-dimpled cheeks (d), what proportion of offspring with dimples can be expected if two non-dimpled individuals mate?

<p>0% (A)</p> Signup and view all the answers

Each human skin cell contains how many chromosomes?

<p>46 chromosomes (D)</p> Signup and view all the answers

If a heterozygous straight fingered chimpanzee (Ss) mates with a homozygous bent fingered chimpanzee (ss), what percentage of straight fingered offspring can be expected?

<p>50% (D)</p> Signup and view all the answers

The phenotype of an allele is its genetic characteristics.

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

What would be the complementary DNA bases for the sequence G A T C?

<p>C T A G</p> Signup and view all the answers

In meiosis, the type of cells produced are called _____ and they have _____ chromosomes.

<p>gametes; 23</p> Signup and view all the answers

Match the coat colors of guinea pigs with their corresponding alleles:

<p>Black coat color = B Brown coat color = b</p> Signup and view all the answers

Flashcards

Brown eyes dominance

Brown eyes are a dominant trait and blue eyes are recessive in humans.

Bb genotype

An individual with Bb genotype will have brown eyes.

bb genotype

A person with bb genotype has blue eyes.

Nucleotide components

Nucleotides are composed of a base, phosphate, and sugar.

Signup and view all the flashcards

Complementary base pairing G

Guanine (G) pairs with cytosine (C).

Signup and view all the flashcards

Complementary base pairing A

Adenine (A) pairs with Thymine (T).

Signup and view all the flashcards

Homozygous Dominant

Having two identical dominant alleles (e.g., BB).

Signup and view all the flashcards

Homozygous Recessive

Having two identical recessive alleles (e.g., bb).

Signup and view all the flashcards

Translation (Genetics)

The process of using the genetic code to build proteins from amino acids.

Signup and view all the flashcards

Dimpled Cheeks (Genetics)

A dominant trait; individuals with at least one dominant allele for dimples will have dimples.

Signup and view all the flashcards

Non-Dimpled Cheeks (Genetics)

A recessive trait; individuals need two recessive alleles to have non-dimpled cheeks.

Signup and view all the flashcards

Human Skin Cell Chromosomes

Human skin cells contain 46 chromosomes.

Signup and view all the flashcards

Straight Fingers (Genetics)

A dominant trait in chimpanzees; individuals with at least one 'S' allele will have straight fingers.

Signup and view all the flashcards

Phenotype of an Allele

The physical characteristic that an allele creates.

Signup and view all the flashcards

Meiosis (Cell Division)

A type of cell division that creates gametes (sex cells) with half the number of chromosomes.

Signup and view all the flashcards

Gamete Chromosomes

Gametes have 23 chromosomes, unlike other cells containing 46.

Signup and view all the flashcards

Study Notes

Genetics Practice Exam

  • Question 1: Dominant Brown Eyes

    • Brown eyes are dominant to blue eyes
    • A brown-eyed man (BB) marries a blue-eyed woman (bb)
    • All 8 children have brown eyes (Bb)
  • Question 2: Genotype to Eye Color

    • If the genotype is Bb, the eye color is brown
  • Question 3: Genotype to Eye Color

    • If the genotype is bb, the eye color is blue
  • Question 4: Nucleotide Structure

    • Nucleotides have bases, phosphate, and sugar
  • Question 5: Base Pairing Rule (Guanine)

    • Guanine (G) pairs with cytosine (C)
  • Question 6: Base Pairing Rule (Adenine)

    • Adenine (A) pairs with thymine (T)
  • Question 7: Alleles - Homozygous Dominant

    • If two alleles are the same (e.g., BB), it's homozygous dominant
  • Question 8: Alleles - Homozygous Recessive

    • If two alleles are the same (e.g., bb), it's homozygous recessive
  • Question 9: Base Pairing Rule

    • Guanine (G) pairs with cytosine (C)
    • Adenine (A) pairs with thymine (T)
  • Question 11: DNA Structure

    • DNA has a double helix structure
  • Question 12: Chromosome Number in Gametes

    • Gametes (sex cells) have 23 chromosomes
  • Question 13: Sex Chromosomes for Females

    • Females have XX sex chromosomes
  • Question 16: Transcription

    • Transcription is the process of copying DNA's message
  • Question 17: Translation

    • Translation is reading the genetic code to make amino acids
  • Question 18: Dimpled Cheeks

    • If both parents have non-dimpled cheeks (dd), 0% of offspring will have dimples.
    • If both parents have dimples (DD), 100% will have dimples.
  • Question 20: Chromosomes in Human Skin Cells

    • Human skin cells have 46 chromosomes
  • Question 22: Chimpanzee Fingers

    • Heterozygous straight fingers (Ss) and a homozygous bent fingers (ss) could produce 50% straight offspring
  • Question 23: Phenotype

    • Phenotype refers to the observable traits

Additional Notes (Guinea Pigs)

  • Black Coat vs. Brown Coat

    • Black coat color is dominant to brown coat color
  • Allele Symbols

  • Crosses and Offspring Prediction -Punnett squares are used to predict offspring genotypes and phenotypes

    • Specific ratios for the three types of crosses (i, ii, and iii) are given following the Punnett squares

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Description

Test your knowledge of basic genetics concepts through a series of questions including eye color inheritance, nucleotide structure, and base pairing rules. This practice exam covers essential topics that form the foundation of genetic understanding.

More Like This

Eye Color Genetics
5 questions

Eye Color Genetics

CoolestSchorl avatar
CoolestSchorl
Eye Color Genetics Quiz
5 questions

Eye Color Genetics Quiz

HardWorkingWetland avatar
HardWorkingWetland
Pleiotropy and Eye Color Genetics
24 questions
Use Quizgecko on...
Browser
Browser