An organism is said to be ( ) if it carries two identical alleles for a certain trait.
A: heterozygous
B: homologous
C: homozygous
D: monohybrid
E: dihybrid
A: heterozygous
B: homologous
C: homozygous
D: monohybrid
E: dihybrid
举一反三
- If an organism is said to be true breeding for a particular trait, this means that A: they are heterozygous for that trait. B: they are homozygous for that trait. C: they are incompletely dominant for that trait. D: they have two kinds of alleles for that trait.
- Which type of inheritance is present when a trait is characterized as having more than two alleles that govern its inheritance? A: polygenic traits B: incomplete dominance C: sex-linked traits D: multiple alleles
- If a particular trait had a gene that had a possibility of 9 alleles in the population of a species, which of the following is true regarding this gene? A: The diploid number for the alleles would be 18 for this organism. B: The haploid number for the alleles would be 9 for htis organism. C: The maximum number of alleles for this gene would be 2. D: There is infinite variety in the expression of this trait in one organism.
- What is a genetically modified organism (GMO)? A: a plant with certain genes removed. B: an organism with an artificially altered genome. C: a hybrid organism. D: any agricultural organism produced by breeding or biotechnology.
- Which of the followings would contain genetic material that is 100% identical? A: Homologous chromosomes B: Sister chromatids C: X and Y chromosomes D: Acrocentric chromosomes E: non-sister chromatids