Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?

(make a punnet square)

What law BEST explains why an organism with 'Tt' will show only the dominant phenotype?

If an organism inherits one dominant allele and one recessive allele for eye color, their genotype would be:

Two parents have the genotype Gg for a genetic disorder caused by a recessive allele. What is the chance that any of their children will inherit the disorder?

(make a punnet square to be sure!)

Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to each of their offspring?

According to the Punnett square below: B represents the dominant gene for blue feathers and b represents the recessive gene for red feathers.

A homozygous dominant and a homozygous recessive birds mate. What percent chance does the offspring have for red feathers?

B B

b Bb Bb

b Bb Bb

In pigs, the allele for a wavy, rough coat (R) is dominant to the allele for a soft, fine coat (r).

A rough coat boar and soft coat sow made. The produce several litters, 50% are rough coat and 50% are smooth coat. What must the genotypes of the parents to create this phenotypic ratio?

Imagine two heterozygous parents. Each has a dominant allele (A) for brown eyes and a recessive allele (a) for blue eyes. What would the genotypic ratio of the offspring?

(Punnet square may help!)

homozygous or heterozygous?

TT

homozygous or heterozygous?

Tt

homozygous or heterozygous?

tt

If square is DOMINANT over round what are the PHENOTYPES for the following?

SS, Ss, ss

For an XX female to express a recessive sex-linked trait, she must have

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it a(n)

Red hair and freckles are commonly inherited together. Which of the following patterns of inheritance explains this?

A man with Type A blood marries a woman with Type AB blood. What is the only blood type NOT possible in any of their children?

(I shouldn't have to say this, but MAKE PUNNET SQUARES! Keep in mind, the man can be AA or AO, O is recessive!)

A man who is normal for color vision marries a woman who is colorblind (remember, color-blindness is sex-linked). What is the probability of having a colorblind MALE son?

(come on, you know you gotta make a punnet square!!!!)

Mutations can be caused by all of the following EXCEPT

(which one is NOT a cause of mutations)

In order for a mutation to be passed on from parent to offspring, the mutation must occur in

If a mutation only changes the nucleotide sequence for a single protein, then it is known as a

What kind of mutations occurred in the sex chromosome of an individual with the genotype XXY?

Nondisjunction of autosomal chromosomes, such as chromosome number 21, can result in disorders like

When gettting an x-ray you notice the technician covers you with a heavy vest. This vest blocks x-rays- a form of radiation. This is done because radiation can damage the DNA in your organs that you can pass onto your children. Substances like radiation and other chemicals are known as MUTAGENS because

What is the name of the type of mutation:

ATGCCATCCG

ATGCTATCCG

Chromosome mutation is a large-scale alteration of the chromosomes of an organism, where either the number or the structure of chromosomes is changed. There are three main types of chromosomal mutations known as Duplications, Inversions, and Deletions.

Gene mutation is a small-scale alteration of the genetic material of an organism, which primarily is a change in the nucleotide sequence of a particular gene. Point mutations and frame shift mutations are the two main types, but the frame shift mutations take place as either deletions or insertions.

sub types of point mutations known as Transition, Transversion, Silent, Missense, and Nonsense.

Gene mutation is a change in the nucleotide sequence, in a particular gene, whereas chromosomal mutation is a change in several genes, in the chromosome.

• Gene mutation is a small-scale alteration, but chromosome mutation can be considered as a serious alteration.

• Gene mutations can sometimes be corrected, but chromosomal mutations are hardly corrected.

• Gene mutation is only a slight structural alteration, whereas chromosomal mutations are either numerical or structural changes in the entire DNA strand.