alleryStart learning →A pea plant that is homozygous at a given locus has what?
AOne allele on one of its chromosomes only
BFour alleles spread over two chromosomes
CTwo different alleles at the matching sites
DTwo identical alleles at the matching sites
Answer & Solution
Correct answer: D. Two identical alleles at the matching sites
1. A diploid organism carries two copies of each gene, one on each homologue.
2. Homozygous means those two alleles are identical.
3. Two different alleles at the same locus would make the plant heterozygous.
4. A diploid cell never carries one or four copies of the same gene at that locus.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.2 Characteristics and Traits_
Keep practising Mendel's Experiments and Heredity
Browse all Mendel's Experiments and Heredity questions for NCEA Level 2, or explore more Biology topics.
Related questions
Sort each clue by its dominance patternOrder the steps of crossing overKnock out the false allele claimsHow many genes contribute to eye colour in humans, at minimum?A single characteristic gives a phenotypic ratio whose parts total 16. What does that usuaIn shepherd's purse, seeds are ovoid only when both genes are homozygous recessive. What rTwo mice heterozygous at both the A and C genes are crossed. What phenotypic ratio of agouAgouti coat colour needs a dominant A allele, but pigment of any kind needs a dominant C a