SCIENCE GENETIC TEST 😔👹

Maintaining a rich variety of genetic material that may lead to discoveries useful to humans can be ansured by (1) preserving biodiversity (2) increasing cloning (3) asexual reproduction (4) selective breeding

(1)

Two kittens in a litter are genetically different from each other and from their parents. These genetic differences are most directly due to (1) sexual reproduction (2) asexual reproduction (3) cloning (4) evolution

(1)

Down syndrome occurs when an individual has an extra copy of chromosome 21. This additional genetic material alters development and results in Down syndrome. This genetic abnormality is an example of (1) mutation (2) fertilization (3) a substitution (4) differentiation

(1) mutation

A Chihuahua is born having a trait that is different from either of its parents. A possible explanation for the difference is that the Chihuahua puppy (1) was produced as a result of the recombination of genes during sexual reproduction (2) was produced as a result of the process of asexual reproduction (3) inherited a gene from one of its grandparents and not its parents (4) had a mutation that occurred after it was born

(1) was produced as a result of the recombination of genes during sexual reproduction

Gene editing can be used to swap out an unwanted gene for a desirable one from the same species. Which statement best explains why the desired gene will be found in all cells that come from the genetically edited cell? (1) The original cell will reproduce by meiosis and a mutation will occur. (2) The altered DNA in the edited cell will be replicated and passed on to each new cell during mitosis. (3) DNA replication in body cells will result in sperm and egg cells with the edited gene. (4) The desired gene will be inserted into each new cell by using

(2)

A weightlifter has spent years building his muscular strength. His newborn daughter has normal strength for a baby. Which statement best explains this situation? (1) A daughter inherits most of her traits from her mother. The daughter's muscles are unlikely to resemble her father's. (2) The weightlifter's wife probably did not lift weights. Both parents must have this trait before the baby can inherit it. (3) Babies do not have strong muscles. The daughter's muscles will be unusually strong n a few more months. (4) The weightlifter's highly developed muscles resulted from exercise. A characteristic such as this will not be inherited.

(4)

Gene mutations can be caused by many things. These mutations are biologically important because they (1) occur at a regular rate and therefore can be controlled (2) can be passed to the offspring if they occur in any cell of the body (3) are always harmful and therefore help to eliminate weak traits (4) can result in a new variety of gene combinations in the species

(4)

Sexually reproducing organisms pass on genetic information as a (1) long chain of amino acids (2) complex series of inorganic proteins (3) sequence of complex sugars (4) is sequence of the bases A, T, C, and G

(4)

Which row in the chart below accurately identified two causes of mutations and the cells that must be affected in order for the mutations to be passed on to offspring? ROW CAUSE OF MUTATIONS CELLS AFFECTED (1) infections and antigens body cells (2) meiosis and mitosis body cells (3) disease and differentiation sex cells (4) chemicals and radiation sex cells

(4)

A=T and C=G T=A and G=C

A and T are 35% each C and G are 15% each

Which statement is correct concerning heredity information?

A chromosome is composed of many genes.

Would the mutated DNA strand affect the functioning of protein X? Support your answer.

Both changed in the code will still result the same amino acid

Explain why differences in these human body cells are a biological advantage..

Differences in these human body cells are a biological advantage because specialized cells serve different function in the body.

- Which statement best describes how a new human trait develops and can be passed on to future generations?

During meiosis, a new combination of DNA subunits is formed

Which statement is an accurate description of genes

Genes are made of DNA and code for proteins

- The hair colors of the members of a family are listed below. mother-brown hair father-blond hair older son-brown hair younger son-blond hair The hair colors of the sons are most likely a direct result of

Heredity

some cats have no tail or tails

If it had two will die has one will pass it on having a tail

Before they can pass from a parents cell to its offspring cells, the inherited instructions that a human cell carrie's must first be

accurately replicated

The clover pant having gene 2 (4 leaves) was most likely the result of

an insertion

Animals and green plants are similar in that they

both use DNA to transmit hereditary information to offspring

which process produces only identical offspring?

cloning

Snakes dna has gene CSR what type of mutation is it

deletion

Siamese cats have dark fur on areas of the body that are cooler and light fur on parts of the body that are warmer. The color differences in this Siamese cat are most likely due to

gene expression being influenced by the environment

Genetically identical yarrow plants were grown at different altitudes. Even though their genetic makeup was identical, the plants grew to different heights. One likely explanation for the different heights of the plant at each altitude is that

gene expression was influenced by the environment

Mutations are more directly caused by changes in the

genes of chromosomes

Traits are passed from parent to offspring. These traits are determined by

genes, located on the chromosomes, found in the nucleus

A man is exposed to large amounts of ultraviolet radiation while sunbathing at the beach. This exposure causes a genetic change in the DNA of

his skin cells, only

BRCA genes are human genes that normally work to help shut down cancer cells before they can harm the body. Scientists have learned that individuals inheriting a damaged form of a BRCA gene are at grater risk of developing breast or ovarian cancer. This discovery is an important first step in

identifying individuals at risk and recommending preventive treatment

Sometimes, a person is born with one or more extra chromosomes in each cell. This usually results in abnormalities because the affected person has

more genes in each cell than a person with a normal chromosome number

It is recommended that people avoid excessive use of tanning beds. Exposure to the radiation emitted by tanning beds can cause skin cancer. This cancer is the direct result of a

mutation in the genetic material

- kitten was born with black fur and green eyes. The fur and the eye color of its parents are shown in the chart below. Which statement helps explain why the kitten has black fur?

offspring receive genetic information from both parents

A sudden change in the DNA of cells developing in which organ could be passed to future generations.

ovaries

When receiving x rays, individuals wear a lead shield over major organs in order to limit the body's exposure to radiation. One reason for this procedure is to

prevent mutations in gametes

Identical twins were separated at birth and raised by two different families. Years later, one twin was a physically fit member of the cross-country team, and the other twin was overweight with slightly higher-than-normal blood pressure. The differences in these twins could be explained by the fact that

the environment can influence the expression of genes

although all of the cells of a plant contain the same genetic material, root cells and leaf cells are not identical because

use different parts of their genetic instructs