The genetic information of a living organism is located in the organism's ______. A. chlorophyll B. computers C. cells D. vacuoles
One pair of genes that determine a specific trait. A. Chromosomes B. DNA molecules C. Chromatids D. Alleles
A ________ can be defined as a basic unit of hereditary information which refers to a specific segment of DNA that influences a particular trait or group of traits. A. chromosome B. genome C. gene D. zygote
Which of the following is true about genes? A. Genes are made up of smaller molecules known as chromosomes. B. Genes are responsible for all the traits of an organism. C. The genes of a particular organism can never change throughout its lifetime. D. In humans, genes are passed to an offspring from two parents.
D. In humans, genes are passed to an offspring from two parents.
Within your cells, the genetic material that controls your traits is located in an organelle called... A. the mitochondrion. B. the chloroplast. C. the nucleus. D. the ribosome.
B = Brown; b = blue BB x bb Provide the % of each genotype/phenotype
100% Bb (Brown)
Daily double DAILY DOUBLE Sickle-cell anemia is a genetic disorder of the blood in which the shape of red blood cells is distorted, resulting in a variety of health problems. The allele for normal blood cell production (H) is dominant to the allele for sickle cell production (h). If one parent has sickle-cell anemia and the other parent is a carrier, what is the probability that their child will have sickle-cell anemia? Parents: Hh x hh
50% hh (sickle cell anemia) 50% Hh (carrier)
In humans, the allele for brown eyes (B) is dominant to the allele for blue eyes (b). What is the probability that two heterozygous brown-eyed parents will have a child with blue eyes? A. 50% B. 0% C. 75% D. 25%
In a particular type of cat, coat color follows the dominant/recessive pattern of inheritance. The allele for a brown coat (B) is dominant to the allele for a white coat (b). A cross between two white-coated cats would result in... A. white-coated kittens or brown-coated kittens. B. white-coated kittens only. C. brown-coated kittens only. D. white-coated kittens with brown spots.
B. White Kittens only
In fruit flies, the allele for white eyes (W) is dominant to the allele for red eyes (w). Two heterozygous fruit flies are crossed, resulting in many offspring. Which of the following would best describe the population of offspring? A. All of the offspring population is white-eyed. B. The majority of the offspring population is white- eyed. C. The majority of the offspring population is red-eyed. D. About half of the offspring population is red-eyed, and the other half of the population is white-eyed.
B. The majority of the offspring population will be white eyed.
An organism that contains two of the same alleles for a trait is said to be __________ for that trait. A. recessive B. heterozygous C. homozygous D. dominant
An organism that contains two different alleles for a trait is said to be __________ for that trait. A. recessive B. heterozygous C. homozygous D. dominant
If a Homozygous Brown (B) fur cat and a Heterozygous Brown fur cat have offspring, what is the probability the kittens will have homozygous brown fur? A. 25%C. 75% B. 50%D. 100%
Huntington's disease is a genetic disorder that can result in memory loss and abnormal body movements. Huntington's disease results from a defective gene (H) that is dominant to the allele that produces normal function (h). This means that... I.if someone is heterozygous for Huntington's disease, then he/she will be a carrier but will not have the disease. II.if a child has Huntington's disease, then at least one of his/her parents has the disease. III.if two parents do not have Huntington's disease, then their children will not have the disease. A. I, II, and III B. II and III only C. II only D. I and II only
B. II and III only
Would these parents have heterozygous or homozygous offspring? TT x tt
The instructions, or code, that is responsible for all the inherited traits of an organism... A. is formed after an organism is fully- grown. B. is held in genetic material called DNA. C. is stored within the mitochondria of cells. D. is passed from the offspring to the parent.
B. Is held in genetic material called DNA
A molecule of DNA is "packaged" and carried by a larger molecule called a __________. A. vacuole B. chromosome C. gamete D. diploid
Which of the following are true? I.A single gene can control a single trait. II.A single gene can influence multiple traits. III.A single trait can be controlled by multiple genes. A. I and II only B. II and III only C. I and III only D. I, II, and III
D. I, II, and III
A widow's peak is a V-shaped area of the hairline in the center of the forehead. The allele for having a widow's peak is dominant to the allele for not having a widow's peak. If two parents do not have widow's peaks, what is the probability that their child will have a widow's peak? A. 75% B. 0% C. 50% D. 25% (Daily Double)
B. 0% Daily Double!!!
Many human diseases follow the dominant/recessive pattern of inheritance. If an individual possesses an allele for a disease, but does not have the disease, this person is known as a ___________. A. mutant B. genotype C. carrier D. messenger
Who is the Austrian monk that worked with pea plants and is credited with first proposing a theory of heredity? A.Gregor Mendel B.Charles Darwin C.Robert Hooke D.Rudolph Virchow
A. Gregor Mendel
During the process of reproduction, what type of information is passed from parent to offspring? A.photosynthetic information B.photographic information C.parental information D.genetic information
D. Genetic information
Genes are short segments of DNA and are located on the _______ in a cell. A.vacuoles B.chromosomes C.ribosomes D.lysosomes
Which of the following is not an inherited trait in humans? A.color of eyes B.length of hair C.color of skin D.ability to roll tongue
B. length of hair
What is the process used to assure desirable characteristics, or traits, in the offspring of animals? A.selective breeding B.DNA C.amino acids D.selective mutations