Trisomy -21 is

XO females are

Mendel's law of Independent assortment does not hold true for the genes that are located closely on

A trait that “overpowers” and hide another trait is called:

Why is hemophilia a disease that is more commonly seen in males?

An individual’s collection of genes is called ______

A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?

In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that:

The subject that deals with inheritance and variation is called __________

Which of the following is not a characteristic of Mendel's experiment?

Choose the option that shows recessive traits in pea plant

A true breeding pea plant variety is the one that shows _____________________

Which of the following shows the characteristics of F1 progeny plants in Mendel's monohybrid cross experiments?

When a red flowered snapdragon plant is crossed with a white flowered snapdragon plant, the F1 progeny shows _______________ colored flowers.

Identify the Mendel's Law that states that though the parents contain both the alleles, during gamete formation alleles will separate and each gamete will get only one allele.

In Mendel's experiment, when tall pea plants were crossed with dwarf pea plants, F1 generation showed all tall plants (dominant trait). The recessive trait dwarfness did not get expressed because ________________

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Multiple alleles are present

A gene showing codominance has

In his classic experiments on pea plants, Mendel did not use

Genes do not occur in pair in

The recombinant phenotypic ratio in F2 obtained from parental cross having genotypes TTRR x ttrr will be

A tall red-flowered pea plant after crossing with a dwarf white-flowered plant yields only tall red-flowered plants. A test cross shall give a ratio of

Mendel did not propose the theory of –

Pleiotropic gene has –

Linkage was discovered by

What will be the number of linkage groups in a cell having 2n = 20?

Column A Column B

I. Gene ------------------------ A. Homozygote

II. TT -------------------------- B. DNA

III. Alternate form of gene---- C. Dihybrid cross

IV. TtRr x TtRr ---------------------- D. Allele

The correct match is –

Linkage is

X and Y-chromosomes are

X and Y-chromosomes are

An organism is a hybrid genotype (Tt) but is appears tall instead of short.

If your genotype is Bb, then you can only pass a B or b to your child but you can't pass both.

There are more right-handed people in the world.

One gene for the type of earlobes a person will have will be in each gamete.

Which of Mendel's laws states that alleles are separated during meiosis?

If a dominant allele is present, the trait will always appear in the organism.

Law of Segregation

Which of Mendel's laws states that alleles are separated during meiosis?

If a dominant allele is present, the trait will always appear in the organism.

2 IDENTICAL alleles for the same trait. John has 2 genes for brown eyes so he is ___

DIFFERENT alleles for the same trait. Sue has 1 gene for brown eyes and 1 gene for blue eyes so she is ___

The gene that is expressed. Brown eyes are ___ over blue.

The gene that is hidden unless both genes are present.

A specific characteristics. Mendel looked at 7 different ___ in peas such as color and shape.

One of a number of different forms of a gene. The two ___ for pea color is yellow and green.

Mendel took the pollen from one pea plant and placed it onto the pistil of a second pea plants. This is ___.

John has 2 genes for blue eyes. His GENEOTYPE is __

Sally's genotype is heterozygous. Her genotype is written as ....

A sequence of DNA that codes for a protein and thus determines a trait. There are hundreds of ___ on each chromosome.

The physical characteristics of an organism that is expressed. John has blue eyes and brown hair.

The genetic makeup of an organism. John has 2 genes that are homozygous recessive for eye color {e e }

Brown eyes are dominant over blue eyes.

B - brown eyes. b - blue eyes

Baby Ethan is homozygous recessive for blue eyes

Baby Ethan's phenotype is _____

Brown eyes are dominant over blue eyes.

B - brown eyes. b - blue eyes

Baby Ethan is homozygous recessive for blue eyes

Baby Ethan's genotype is _____

Sections of DNA that provides the instructions for making a protein.

Different Versions of the same gene.

Chromosomes in which one set comes from mom and one set comes from dad.

Having two of the same alleles. ex. (AA, aa)

Having two different alleles ex. (Rr)

An allele if present, will always have that trait expressed. (seen)

An allele that will only have the trait expressed (seen when dominant allele is not present.

The alleles you inherit. ex. The alleles for eye color.

The physical traits (characteristics) seen in an organism. ex. Red hair

A diagram that shows the probability of inheriting traits from parents with certain genes. (alleles)

The assortment of chromosomes for one trait doesn‘t affect the assortment of chromosomes for another trait.

When chromosomes separate in meiosis, each gamete (egg or sperm) will receive only one chromosome from each pair.

A dominant (strong) allele will express itself over a recessive (weak) allele.

The process by which genetic information is passed on from parent to child.

An individual who is capable of passing on a genetic mutation associated with a disease and may not display disease symptoms.