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Fertilization combines gametes from two parents, creating genetic variation. F. False T. True
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Which of the following is an animal that has been domesticated? A. a goat B. a zebra C. a lion
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Which molecule is responsible for a human child having the same eye color as his or her mother? A. proteins B. DNA C. ATP D. fats
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Asexual reproduction produces identical offspring; sexual reproduction introduces genetic variation. F. False T. True
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What type of gene is found on a sex chromosome? A. sex-linked B. growth factors C. tumor-suppressor D. oncogene
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Selective breeding is human-directed artificial selection for desired traits. F. False T. True
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Selective breeding can produce plants and animals with A. extra chromosomes. B. undesired traits. C. desired traits. D. fewer chromosomes.
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What is involved in the process of artificial selection? A. Animals mate randomly,and a beneficial trait emerges in the offspring. B. An animals' genes undergo a mutation that produces a certain trait. C. A new species i...
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the Punnett square is used to A. determine the location of mutated genes. B. determine the probability of offspring traits. C. determine the parent alleles of the offspring. D. determine the makeup of chromosomes.
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Natural selection occurs without human influence, based on survival and reproduction. F. False T. True
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Which sentence best describes the relationship between genes and chromosomes? A. Genes are located inside the nucleus, and chromosomes are located outside the nucleus. B. Chromosomes are located inside the nucleus, and g...
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In organisms, all physical traits and some personality traits are determined by A. the majority of a population. B. the availability of resources. C. their genetic makeup. D. their surrounding environment.
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Heterozygous organisms have one dominant and one recessive allele (e.g., Aa). F. False T. True
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Scientists know that humans have 46 chromosomes. What would a scientist say about a son who looked more like his mother than his father? A. He received more than 23 chromosomes from his mother because he looked like her....
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Which of the following statements best describes genes? A. Genes are behaviors that are learned from the environment. B. Genes are learned behaviors passed from parent to offspring. C. Genes are traits that develop over...
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Agriculture has used selective breeding for many years to pass on desirable traits to domesticated plants and animals. This is an example of which of the following? A. natural selection B. competition for limited natural...
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The picture shows an animal cell with structures X and Y labeled. image Which of the following best explains the relationship between structures X and Y? A. X, nuclei, are located inside Y, chromosomes, and these structu...
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Selective breeding refers to the A. deliberate mating of two organisms with the intention of producing offspring with desirable traits. B. mating of two organisms that have survived an environmental change by having muta...
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Which of following is most likely to occur due to the combination of genes during sexual reproduction? A. variation within a population B. less adaptation within a population C. many identical offspring D. many identical...
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Which statement best describes meiosis? A. It is carried out in all tissues. B. It produces gametes (eggs and sperm). C. It is the first stage of mitosis. D. It produces cells identical to the parent cells.
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Each parent gives one sex chromosome to their offspring. Whose chromosome determines the sex of the child? A. grandfather B. grandmother C. father D. mother
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What is a genotype? A. the type of species-specific traits that are found in populations of organisms B. an identical gene that is passed through generations C. the traits of an organism that can be observed D. the genes...
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Which statement best describes daughter cells resulting from mitosis? A. Daughter cells have less genetic material than the parent cell. B. Daughter cells are genetically different from the parent cell. C. Daughter cells...
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How are sexual and asexual reproduction similar? A. Both are processes used to replace dead skin cells. B. Both are processes used to create exact copies of cells. C. Both are processes that produce daughter cells with t...
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What is a phenotype? A. organisms' specific sequence of genes B. two alleles that are dominant for a trait C. the physical appearance of an organism D. the initial combination of genes in a zygote
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