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Heredity & Genetics 6th Grade Test
1. / Select the choice that best completes the following sentence:______reproduction requires one parent, while______reproduction requires two parents.
A. / Animal, bacterial
B. / Single, double
C. / Sexual, asexual
D. / Asexual, sexual
2. / Zainab is in science class, and he is studying an organism that reproduces sexually. The genetic material of the organism
A. / is a blend of the genetic material of its parents.
B. / will be passed to its offspring without any changes.
C. / is identical to its own genetic material.
D. / all of these
3. / Some organisms' reproductive systems require only one parent. What is the name for this type of reproduction?
A. / singular production
B. / monoproduction
C. / sexual reproduction
D. / asexual reproduction
4. / Which is an advantage of sexual reproduction over asexual reproduction?
A. / Sexual reproduction is quicker and less complex.
B. / Sexual reproduction produces more diversity.
C. / Sexual reproduction produces more offspring.
D. / Sexual reproduction never produces genetic defects.
5. / All organisms on Earth have the information necessary for building them coded in their genes, and each gene is a part of the organism's unique DNA molecule.
However, some organisms get all of their genetic material from just one parent organism. When this happens, this is called______reproduction.
A. / asexual
B. / sexual
C. / singular
D. / infertile
6. / A kangaroo is an organism that inherits half of its genes from its mother and half from its father.
From this information, how do kangaroos most likely reproduce?
A. / asexually
B. / sexually
C. / through mitosis
D. / through meiosis
7. / Inherited traits are traits that children get from their parents through
A. / genes.
B. / imitating their parents.
C. / sharing their parents' environment.
D. / infection.
8. / Genes are located
A. / only in chromosomes.
B. / only in sex cells.
C. / in inherited traits.
D. / in cytoplasm.
9. / Which of the following is true about the behavior of an organism?
A. / The behavior of an organism is influenced only by the traits it inherits from its parents.
B. / The behavior of an organism is not influenced by either its heredity or its environment.
C. / The behavior of an organism is influenced only by the environment in which it lives.
D. / The behavior of an organism is influenced by both its heredity and its environment.
10. / Which of the following traits is affected by both genes and the environment?
A. / how long a person lives
B. / the color of a person's eyes
C. / a person's sex
D. / all of these
11. / Trevor is beginning to get bald at a young age. His father is not bald, but his maternal grandfather has been bald for many years. Some of the older people in his community are bald, but very few younger people are bald.
What factor is most likely influencing Trevor's baldness?
A. / bad behavior
B. / environment
C. / inheritance
D. / his age
12. / Last year, Adam and his five friends all bought baby mice from the same litter. When they get together a year later, all of the mice are very similar in appearance.
Which of the following is likely the reason that the mice are similar in appearance?
A. / genetics
B. / nutrition
C. / environment
D. / disease
13. / A species of bird lives in a tropical ecosystem and survives by eating fruit. The climate of this location changes very quickly, and the ecosystem becomes too cold for fruit trees to survive.
If the bird species cannot adapt to eat a different source of food, this species of bird will most likely
A. / become dormant.
B. / become extinct.
C. / increase in number.
D. / not be affected.
14. / If the environment changes quickly and no individual members of a species are able to survive in the new environment, then the species will
A. / turn into a different species.
B. / not be affected.
C. / become extinct.
D. / begin mating with other species.
15. / Pangolins are capable of reproducing when they are two years old.
Which of the following is necessary for any individual pangolin to reproduce?
A. / the ability to bear multiple young at once
B. / the ability to fight off predators
C. / the ability to produce milk to feed its offspring
D. / the ability to survive until it reproduces