5.2: Traits & Punnett Squares &...

5.2: Traits & Punnett Squares & Meiosis

p. 120-125

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Weekly Lifeline Check

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Calculate the Mendelian ratio for the following trait: Round seed (dominant): 5474 and Wrinkled (recessive): 1850.

What did you learn today?

The ratio is: 2.95: 1 OR 3:1

Where can genes be found? What are alleles?

Genes are found on chromosomes in the nucleus of our cells. Alleles are the two forms of genes one can inherit from their parents.

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Academic Toolkit1

My List of Academic Tools

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Academic Toolkit1

My List of Academic Tools Unit 1: Heredity, Genes, and DNA

Standards and CSS and NGSS

Unit 1: Heredity, Genes, and DNA

Chapter 5 Vocabulary 1/5/15

Finger Print Activity 1/5/15 Unit 1: Ch 5.1 Mendel & His Peas Notes 1/6/15 Unit 1: Ch 5.1 Mendel & His Experiments Notes 1/6/15

Unit 1: Ch 5.1 Mendel & His Experiments WKST & HMWK 1/6/15

Unit 1: Ch 5.1 Mendel & His Ratio WKST & HMWK 1/7/15

Unit 1: Ch 5.1 Mendel & His Ratio Notes 1/7/15

1/7 OR 1/8Ch 5.1 Quiz: Mendel, Peas and Ratios

Trait Survey Packet (Lab) 1/8/15

Section 5.1 Review #1-4, 7, 8-9 p. 119 1/8/15

Ch 5.2: Traits & Punnett Square Notes 1/12/15

Ch 5.2: Traits & Punnett Square WKST & HMWK 1/12/15

Ch 5.3: Meiosis Notes

Ch 5.3: Meiosis Activity (WKST) & HMWK

1/14/15

Ch 5.2 Section Review p. 125 #1,3,4,6,7-9 1/15/15

Ch 5-2 & 5.3 Quiz: Punnett Squares & Traits 1/15/15

Family Portrait Activity-Probability of Genes 1/13/15

CH 5 VOCABULARY

Genes: instructions/“blueprints” for inherited traits

Alleles: the different forms (dominant or recessive) of a gene

CH 5 VOCABULARY

Genes: instructions/“blueprints” for inherited traits

Alleles: the different forms (dominant or recessive) of a gene

CH 5 VOCABULARY

Genotype: both inherited alleles together form this; the “genetic” makeup of a trait

Phenotype: an organism’s physical expression of a gene “physical trait”

Vocabulary Example (1 gene=2 alleles)

Genetic Application

Genotype: •  Genetic makeup of

an organism

Represented by (TT, tt, or Tt)

T=dominant allele t=recessive allele

Phenotype: •  Physical

characteristics of an organism

Similar to “trait” •  Actual trait you see face-to-face

•  Physically observing someone with brown eyes

CH 5 VOCABULARYVocabulary Genotype Phenotype

Homozygous: Term used to refer to an organism that has two identical alleles for a particular trait

TT or tt TT= homozygous dominant (tall) tt= homozygous recessive (short)

Heterozygous: Term used to refer to an organism that has two different alleles for the same trait

Tt Tt=tall (dominant trait)

PUNNETT SQUARES

How do we predict traits for future offspring?

Punnett squares: organizes all possible combinations of offspring from specific parents.

We use the alleles to make and fill in the square.

PUNNETT SQUARE SET UP

Making a Punnett Square:

pg. 121 in textbook

GENES AND ALLELES MOVIE CLIP

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Calculate the Mendelian ratio for the following trait: Round seed (dominant): 5474 and Wrinkled (recessive): 1850.

The ratio is: 2.95: 1 OR 3:1

Where can genes be found? What are alleles?

Genes are found on chromosomes in the nucleus of our cells. Alleles are the two forms of genes one can inherit from their parents.

CH 5 VOCABULARY

Probability: the likelihood that a possible future event will occur in any given instance of the event

PUNNETT SQUARE SET UP

Making a Punnett Square:

pg. 121 in textbook

Steps for Punnett SquaresSTEPS:

(1) Fill in (or complete) the Punnett Square.

(2) Record the genotypes you find.

(3) Record the phenotypes you find.

(4) Use probability to explain the chances of a dominant or recessive offspring for both genotype and phenotype.

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Fill in (or complete) the Punnett Square.

tTtt T

T=dominant trait for “tall”. t=recessive trait for “short”. Looking at the Punnett Square, what is the probability of this couple having a child who is short?

Name Period G

Academic Toolkit1

Name Period G

Academic Toolkit1

Name Period G

Academic Toolkit1

Name Period G

Academic Toolkit1

My List of Academic Tools Unit 1: Heredity, Genes, and DNA

Standards and CSS and NGSS

Unit 1: Heredity, Genes, and DNA

Finger Print Activity 1/5/15 Unit 1: Ch 5.1 Mendel & His Peas Notes 1/6/15 Unit 1: Ch 5.1 Mendel & His Experiments Notes 1/6/15

Unit 1: Ch 5.1 Mendel & His Experiments WKST & HMWK 1/6/15

Unit 1: Ch 5.1 Mendel & His Ratio WKST & HMWK 1/7/15

Unit 1: Ch 5.1 Mendel & His Ratio Notes 1/7/15

1/7 OR 1/8Ch 5.1 Quiz: Mendel, Peas and Ratios

Trait Survey Packet (Lab) 1/8/15

Section 5.1 Review #1-4, 7, 8-9 p. 119 1/8/15

Ch 5.2: Traits & Punnett Square Notes 1/12/15

Ch 5.2: Traits & Punnett Square WKST & HMWK 1/12/15

Ch 5.3: Meiosis Notes

Ch 5.3: Meiosis Activity (WKST) & HMWK

1/14/15

1/15/15

Ch 5.2 Section Review p. 125 #1,3,4,6,7-9 1/15/15

Family Portrait Activity-Probability of Genes 1/13/15

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What are the four steps of mitosis? What is the purpose of mitosis?

The four steps in mitosis are: prophase, metaphase, anaphase and telophase. The purpose is to divide one cell into two identical cells.

What are the steps of meiosis? What is the purpose of meiosis?

The steps of meiosis are: prophase, metaphase, anaphase, and telophase. The purpose is to have four non-identical cells.

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What are the four steps of mitosis? What is the purpose of mitosis?

The four steps in mitosis are: prophase, metaphase, anaphase and telophase. The purpose is to divide one cell into two identical cells.

What are the steps of meiosis? What is the purpose of meiosis?

The steps of meiosis are: prophase, metaphase, anaphase, and telophase. The purpose is to have four non-identical cells.

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What is a pedigree and why is it important?

A pedigree is a way to predict the passing on of disorders in a family tree. It is important so families know the probability of passing traits onto their kids.

Agenda

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HMWK: -Meiosis Wrkst & Hmwk due Tues (1/20)

-Family Portrait Lab Drawing due Tues (1/20) -Ch 5.3 Section Review p. 133 #2-4, 5-6, 8,9 (on lined paper use p. 126-132) due Thurs 1/22

-Ch 5.3 Pedigree Worksheet & Homework due tomorrow (1/22)

Name Period H_Table of Contents

# Assignment Date Score1 /

CA Content Standards Covered In This Unit

Unit 1: Ch 5.1 Mendel & His Peas Notes 1/6/15

Unit 1: Ch 5.1 Mendel & His Experiments Notes 1/6/15Unit 1: Ch 5.1 Mendel & His Experiments WKST & HMWK 1/6/15

Unit 1: Ch 5.1 Mendel & His Ratio WKST & HMWK

Unit 1: Ch 5.1 Mendel & His Ratio Notes

Ch 5.1 Quiz: Mendel, Peas and Ratios Trait Survey Packet (Lab)

Section 5.1 Review #1-4, 7, 8-9 p. 119Ch 5.2: Traits & Punnett Square Notes

Ch 5.2: Traits & Punnett Square WKST & HMWK

Ch 5.3: Meiosis NotesCh 5.3: Meiosis Activity (WKST) & HMWKCh 5.2 Section Review p. 125 #1,3,4,6,7-9

Family Portrait Activity-Probability of Genes

Finger Print Activity 1/5/15

Ch 5.3 Section Review p.133 #2-4,5-6,8,9

Ch 5.3 Quiz: Meiosis & Pedigrees

1/22/15

Pedigree Worksheet & Homework 1/22/15

“Bug Builder” Lab Activity 1/22/15

Ch 5 Vocabulary

Hauki Deck

p. 14 Meiosis and Sex Chromosomes

Sex chromosomes carry genes that determine gender

p. 14 Sex-Linked Disorders

Certain disorders, such as color blindness are carried on “X” chromosomes.

Men are more likely to have sex-linked disorders. Why?

p. 14 Genetic Counciling

Genetic councilors make a pedigree to see how disorders are passed from generation to generation.

This way, they can trace a trait through a family tree.

p. 14 Pedigree

If both copies of the “X” chromosome is affected, you have the disease.

If you have only one “X” with the mutated trait, then you have the disease

Review Ch 2 Vocabulary

Asexual reproduction: only 1 parent is needed; 1 cell dividing into two identical cells (mitosis)

Sexual reproduction: two parents are needed; 2 cells (mom and dad) joining into 1 cell

Intro to Meiosis

How many chromosomes are found in most cells in your body?

How many chromosomes are found in the sex cells of your body?

Prezi Meiosis

YouTube

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