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.
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.
举一反三
- 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________ trait is opposed to a recessive trait which is expressed only when two copies of the gene are present. A: determinant B: dormitory C: dominant D: dormant
- 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.
- ___________ consideration is a dominant trait for all the scientific researchers.
- trait