7.L.2.1 Genetics (Part 1)(1-30)

Brown eyes (B) are dominant over blue eyes (b). Parents with the genotypes of BB and Bb have several children. What is the phenotype of the children?

• BB

• Bb

• blue eyes

• brown eyes

Organisms that reproduce sexually have offspring with greater variety. Which statement best explains this characteristic?

• The offspring get DNA from one parent, and it mutates readily.

• The offspring get DNA from two parent, and it mutates readily.

• The offspring get DNA from one parent, and it combines randomly.

• The offspring get DNA from two parent, and it combines randomly.

Which parts of a cell determine the traits an organism inherits?

• chromosomes

• mitochondria

• ribosomes

• vacuoles

A gamete involved in sexual reproduction only contains half a set of DNA. Where does the other half of the DNA come from when forming an offspring?

• a body cell

• a gene mutation

• a second gamete from another parent

• a second gamete from the same parent

How are body cells different from sex cells within the same organism?

• Body cells have a full set of DNA, while sex cells do not.

• Sex cells have a full set of DNA, while body cells do not.

• Body cells are constantly created, while sex cells are not.

• Sex cells are constantly created, while body cells are not.

Which organism would have the most variation in the DNA of its offspring?

• amoeba

• bacterium

• cat

• yeast

Which is an example of asexual reproduction?

• newborn offspring being born with DNA from only one parent

• identical twins being born with half of the DNA from each parent cell

• gametes joining together to create a zygote with DNA from each parent cell

• an amoeba undergoing binary fission to create two cells identical to the parent cell

Which statement describes a population of roses if budding is the only method used in reproduction?

• The population would have little genetic diversity.

• The mutation rate in the population would increases.

• The mutation rate in the population would decrease.

• The population would have a great amount of genetic diversity.

Which choice describes mitosis?

• fertilization of gamates

• budding of parent cells

• cell division that produces two identical daughter cells

• cell division that produces cells with half of the genetic material from both parents

What is the difference between budding and fertilization?

• Budding is a type of sexual reproduction in which there is a fusion of male and female sex cells, while fertilization is a type of asexual reproduction in which a cell or group of cells pinch off from the parent to form a new individual.

• Budding is a type of asexual reproduction in which a cell or group of cells pinch off from the parent to form a new individual, while fertilization is a type of sexual reproduction in which there is a fusion of male and female sex cells.

• Budding is a type of asexual reproduction in which offspring has twice the number of chromosomes as the parent, while fertilization is a type of sexual reproduction in which there is a fusion of male and female sex cells.

• Budding is a type of asexual reproduction in which a cell or group of cells pinch off from the parent to form a new individual, while fertilization is a type of sexual reproduction in which two identical daughter cells are formed.