Genetics EOC Review Lesson

Genetics EOC Review

Multiple Choice

an observable characteristic

• trait

• gene

• allele

• DNA

Multiple Choice

A segment of DNA that codes for a trait

• gene

• allele

• chromosome

• chromatid

Multiple Choice

Why do children look like a combination of their parents?

• Inherited traits are mostly passed to children through the genes of their mother

• Inherited traits are mostly passed to children through the genes of their father

• Inherited traits are equally passed to children through the genes of their parents

• Inherited traits are passed to children through the genes of their grandfathers only

Multiple Choice

Genetic traits are determined by one or more

• genes

• chromosomes

• random chances

• cells

Multiple Choice

A version or variation of a gene

• trait

• gene

• allele

• DNA

Multiple Choice

When an organism has two of the same alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

Multiple Choice

The observable expression of a trait

• phenotype

• genotype

• chromosome

• allele

Multiple Choice

When an organism has two different alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

Multiple Choice

The alleles that an organism has

• genotype

• phenotype

• chromosome

• recessive

Multiple Choice

This type of allele is expressed whether there are one or two copies present.

• dominant

• recessive

• homozygous

• heterozygous

Multiple Choice

These types of alleles are only expressed if the organism has two copies

• dominant

• recessive

• homozygous

• heterozygous

Multiple Select

An Ss fly could be described as (Check all that apply.)

• homozygous

• heterozygous

• dominant phenotype

• recessive phenotype

Multiple Choice

B = brown eyes

b = blue eyes

What is true about these two brothers that have brown eyes?

One has genotype BB the other Bb.

• they have same phenotype and genotype

• they have different genotypes and phenotypes

• they have same phenotype but different genotypes

• they have same genotype but different phenotypes

Multiple Choice

Fill in the Yellow Box

• AA

• Aa

• aa

Multiple Choice

Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

What is the genotypic ratio of the offspring?

• 3:1

• 1:3

• 1:2:1

• 2:2

Multiple Choice

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

• 0%

• 25%

• 50%

• 75%

Multiple Choice

This type of inheritance pattern is a MIXTURE of both traits.

• incomplete dominance
• co-dominance
• complete dominance
• recessive pattern

Multiple Choice

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

• Incomplete Dominance
• Co dominance
• Independent assortment
• Recessive inheritance

Multiple Choice

The hair form gene shows incomplete dominance. If your genotype is SS, you will have straight hair. If your genotype is CC, you will have curly hair. If your genotype is SC, you will have wavy hair. Mr. and Mrs. Anderson both have wavy hair (SC). What percentage of their children will also have wavy hair (SC)?

• 25%

• 50%

• 75%

• 100%

Multiple Choice

In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.

• 2 red: 2 speckled: 0 white
• 4 red: 0 speckled: 0 white
• 0 red: 4 speckled: 0 white
• 0 red: 2 speckled: 2 white

Multiple Choice

This law describes how each homologous pair separates independently of any other pairs during Anaphase I of meiosis

• Law of Segregation

• Law of Independent Assortment

• Law of Gravity

• Law of Mathematical Order

Multiple Choice

If a person has type A blood, the phenotype is A. What can the genotype be?

• I^BI^B or I^Bi

• I^AI^A or I^Ai

• I^AI^B

• ii

Multiple Select

What pattern of non-Mendelian inheritance is shown by ABO blood group? (select 2)

• Codominance

• Incomplete Dominance

• Multiple Alleles

• X-linked

Multiple Choice

If a father is AA and a mother is AB, what is the probability for a child with AB blood? 

• 0%
• 25%
• 50%
• 75%

Multiple Choice

Identify the genotype for males.

• XY

• XX

• XXY

• YY

Multiple Choice

Colorblindness is a recessive x-linked trait.

Which genotype represents a male with normal vision?

• X^NX^N

• XY^N

• X^NY

• XⁿY

Multiple Choice

The bison herd on Konza Prairie has a sex-linked trait known as “rabbit hock” in which the knee of the back leg is slightly malformed. A male bull that is normal mates with a cow that is a carrier for rabbit hock. Of the female offspring, what percent would be carriers?

• 0%

• 25%

• 50%

• 100%

Multiple Choice

Which of the following would result in a frameshift mutation?

• Insertions only

• Substitution only

• Deletion only

• Insertions and Deletions

Multiple Choice

Original: ATC CAT

Mutation: ATC GCAT

What mutation occurred?

• deletion

• insertion

• silent

• transverse

Multiple Choice

Normal-
GAG-CTC-GAC-AGA
Mutant
GAG CTC-CAC-AGA

• no mutation
• substitution
• insertion
• deletion

Multiple Choice

DNA molecule segment is : TTACGCAAG

The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

• Substitution

• Deletion

• Insertion

• Inversion

Multiple Choice

In a pedigree, what shape represents a male?

• circle
• square
• triangle
• diamond

Multiple Choice

How many generations are shown in this pedigree?

• 1

• 2

• 3

• 4

Multiple Choice

What is the mode of inheritance shown here?

• Autosomal Recessive

• Autosomal Dominant

• Sex Linked

Multiple Choice

What is the mode of inheritance shown here?

• Autosomal Dominant
• Autosomal Recessive
• Sex Linked Recessive

Multiple Choice

Which gender can be carriers of colorblindness and not have it?

• Just males
• Just females
• Both genders

Multiple Choice

Is this trait (the shaded individuals) dominant or recessive?

• dominant
• recessive

Multiple Choice

If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?

• HH

• Hh

• hh

• None of the above

Multiple Choice

Genetic engineering has been used to produce

• medicines.

• food animals.

• improved crops.

• all of these.

Multiple Choice

Gel electrophoresis enables scientists to

• separate DNA fragments.

• combine DNA fragments.

• count the genes in DNA.

• insert DNA in cells.

Multiple Choice

Which is used to cut DNA molecules at specific points?

• gel electrophoresis

• PCR analysis

• a restriction enzyme

• recombinant DNA

Multiple Choice

Which produces offspring from a single cell of an adult?

• inbreeding.

• mutations.

• hybridization.

• cloning.