1. a scientist observes that a certain trait is determined by a single allele. an organism inherited...

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1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another version from the other parent. Both versions of the trait are expressed in the phenotype of the offspring. Which pattern of inheritance best classifies the observed trait? A. dominance b. sex-linkage c. co-dominance d. incomplete dominance

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Page 1: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another version from the other parent. Both versions of the trait are expressed in the phenotype of the offspring. Which pattern of inheritance best classifies the observed trait?

A. dominanceb. sex-linkagec. co-dominance d. incomplete dominance

Page 2: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

c. Co-dominance

Page 3: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

2. An organism that has inherited two of the same alleles of a gene from its parents is ______________ for that trait.

a. hereditaryb. heterozygousc. homozygousd. hemizygous

Page 4: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

c. homozygous

Page 5: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

3. If a characteristic is X-linked, ita. occurs mostly in males.b. occurs only in males.c. occurs mostly in females.d. occurs only in females.

Page 6: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

A. Occurs mostly in males

Page 7: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

Questions 4–5 refer to the figure below, which shows a cross between two rabbits. In rabbits, black fur (B) is dominant to brown fur (b).

4. The fur in both of the parents in the cross isa. black.b. brown.

c. homozygous dominant.d. homozygous recessive.

Page 8: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

a. black

Page 9: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

5. The phenotype of the offspring indicated by Box 3 would be

a. brown.b. a mixture of brown and

black.c. black.d. The phenotype cannot be

determined.

Page 10: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

c. black

Page 11: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

6. If an individual with a dominant phenotype is crossed with an individual with a recessive phenotype, four of their nine offspring show the recessive phenotype. What is the genotype of the first parent?

a. AAb. Aac. aad. The answer cannot be determined from this information.

Page 12: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

b. Aa

Page 13: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

7. If the genotype of an organism is YySsTt, then yST would representa. the genotype of the offspring.B. a possible phenotype of the offspring.C. gamete of the parent.D. possible zygote.

Page 14: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

c. Gamete of the parent

Page 15: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

8. A man with blood type AB could not be the father of a child with

a. blood type A.b. blood type B.c. blood type AB.d. blood type O.

Page 16: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

d. Blood type O

Page 17: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

9. Crossing a snapdragon that has red flowers with one that has white flowers produces a snapdragon that has pink flowers. The trait for flower color exhibits

a. multiple alleles.

b. incomplete dominance.

c. complete dominance.

d. codominance.

Page 18: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

b. Incomplete dominance

Page 19: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

10. What is the relationship between DNA, chromosomes, and genes?

Page 20: 1. A scientist observes that a certain trait is determined by a single allele. An organism inherited one version of the trait from one parent and another

Chromosomes contain DNA and proteinDNA contains genes

Create a gene and a corresponding allele on your whiteboard Gene: _____________ Allele: ________, _________ Alleles (variations of trait) -Purple, blue,

Flashcard Warm-up Genotype vs. Phenotype Genotype is the genetic makeup (AA, Aa, or aa) Phenotype is the physical trait, a result of the genotype Allele

How to set up Punnet Squares. Punnet Square Vocabulary Genotype - An organisms genetic makeup or allele combination; for one specific trait we use two

Genetics What is an ALLELe? Different form/version of a gene You inherited ONE ALLELE from each parent for each trait. For example – Gene = eye color

What is Genetics? - WordPress.com€¦ · What is an Allele? Allelesare the different possibilities for a given trait. Every trait has at least two alleles (one from the mother and

Genetics and Inheritance · 1/1/2018 · Gene, Allele or Trait 1. Your physical appearance 2. A specific form of a gene 3. A part of DNA that codes for a trait 4. The DNA section

Review. Some terms Gene – section of DNA that encodes a trait – Trait – characteristic (Ex. Eye color) Allele – different varieties of a gene – Example:

Ecological Genetics – HS18glebert/download/ecolGen/ecolGen_GlebEbert_v1-1.pdf · ance of a trait across generations due to changes in allele frequencies. Ecologically important

Chapter 10. form dominant recessive Allele - alternative form that a single gene may have for a particular trait (dominant & recessive) two Dihybrid

Campbell Biologycontents.kocw.net/KOCW/document/2015/hanyang_erica/... · 2016-09-09 · dominant trait. and the white flower ... then one (the . dominant allele) determines the organism’s

Chapter 12: Patterns of Heredity and Human Genetics · tance of recessive and domi-nant traits in humans. ... Human Traits Trait Dominant Allele Recessive Allele Number of fingers

Recessive, Dominant, and Sex-Linked Trait · Recessive, Dominant, and Sex-Linked Trait Recessive, Dominant, ... ·if a parent has a dominant allele, there is a 50/50 chance of passing

Patterns of Inheritance. I: Mendel's laws Two factors called genes control each trait For each gene, organisms receive one allele (form) from each parent

Autosomal Dominant Inheritance Autosomal dominant inheritance occurs when one copy of an allele is sufficient for expression of a trait and the gene is

Review A gene represents the genetic material on a chromosome that contains the instructions for creating a trait An allele is one of several varieties

GENETICS: Mendel - ferrarascience.weebly.comferrarascience.weebly.com/uploads/5/2/7/6/52760193/geneticmendel...dominant allele ex. Trait = tongue rolling T= tongue roller c. use a

Factor - A factor is a gene. Organisms have 2 genes for every trait they show. Allele – An allele is a version or form of a gene (dominant vs. recessive)

Patterns of Inheritance. I. Simple inheritance (Mendelian inheritance) One gene controls the trait There are two versions (alleles) of the gene One allele

Vocabulary C12L03C12. dominant & recessive Allele - alternative form that a single gene may have for a particular trait (dominant & recessive) e.g. flower

Ecological Genetics – HS18glebert/download/ecolGen/ecolGen_GlebEbert_v1.pdf · ance of a trait across generations due to changes in allele frequencies. Ecologically important traits

Genetic Terms Gene - a unit of inheritance that usually is directly responsible for one trait or character. Gene Allele - an alternate form of a gene

What is the difference between allele, gene, and trait?postachio-files.s3-website-us-east-1.amazonaws.com/26ee6aafb10b...What is the difference between allele, gene, and trait? Gene

Genetics. Terminology Allele – contrasting form of a gene –Ex: T = tall; t = short –Ex: G = green; g = yellow –CAPITAL LETTERS – DOMINANT TRAIT –lowercase

KM 654e-20150122093731 - Columbia Public Schools / Home · 2016-01-21 · For each trait, there is a dominant allele and a recessive allele. ... genetic variation — the variety

Practical H:\ferreira\biometric\sgene.exe. Practical Aim Visualize graphically how allele frequencies, genetic effects, dominance, etc, influence trait

Human Genetics - f://one design Genetics Objectives ... Through pedigree analysis, a number of human character- ... Conclusion: the allele for this trait is

Genetic Disease and Trait Information for IDB Genotyped ... · _____Genetic Disease and Trait Information for IDB Genotyped Animals in Ireland_____ 5 Sometimes an allele has Incomplete

Gene- segment of DNA that codes for a trait Gene- segment of DNA that codes for a trait Dominant- trait that normally is expressed, only need one allele

· dihybrid phenotype Punnet square homozygous dominant recessive genotype Genetics Vocabulary one of each allele for a trait the genetic makeup of an organism the trait that is

What is genetics? Every sex cell has one allele for each trait. Genetics - the study of how traits are inherited through the interactions of alleles is

Mendel and the Gene Idea · with extra fingers or toes The allele for the 6 finger (polydactyly) trait is dominant to the allele for the more common ... for black and b for brown)

Blood Types The Genetics of Blood Type. Codominance Both alleles are Dominant. Neither allele for a trait is recessive. They both express themselves in

In humans each gene has two alleles . Each parent contributes one allele for a trait

Unit 4-. The different forms of a gene An allele whose trait always shows up in the organism…

Chapter 11 Review Section Assessments. 11-1 1.What are dominant and recessive alleles? Dominant alleles are the form of an allele whose trait always shows