4 syllables: Ho, mo, zy, gous. Stress on zy.
hoh-moh-ZEYE-guhs
/ˌhoʊmoʊˈzaɪɡəs/
Homozygous is pronounced hoh-moh-ZEYE-guhs (/ˌhoʊmoʊˈzaɪɡəs/). It has four syllables (Ho-mo-zy-gous), with the stress on "zy". Homozygous is an adjective used in genetics to describe an individual or organism possessing two identical alleles for a given gene. It indicates that both copies of the gene carry the same variant, leading to uniform expression of that trait. The term is commonly contrasted with heterozygous, where the alleles differ. Pronunciation is a three-syllable word with stress typically on the third syllable in common usage.
adjectiveHomozygous is an adjective used in genetics to describe an individual or organism possessing two identical alleles for a given gene. It indicates that both copies of the gene carry the same variant, leading to uniform expression of that trait. The term is commonly contrasted with heterozygous, where the alleles differ. Pronunciation is a three-syllable word with stress typically on the third syllable in common usage.
How to Pronounce Homozygous
"In this plant strain, the homozygous recessive combination results in a distinctive phenotype."
"Laboratory geneticists selected homozygous lines to ensure trait stability across generations."
"A homozygous genotype for the eye color gene means both alleles encode the same pigment outcome."
Break it as ho-mo-ZY-gous, with primary stress on the third syllable. In IPA: US/UK/AU broadly /hoʊˈmoʊziəs/, /həˈməʊziəs/ (UK), /həˈmɒz.jəs/ or /həˈmɒz.i.əs/ (AU). The middle syllable zlips into a clear /zi/ or /zɪ/ before the final schwa-like /əs/. Keep the mouth relaxed for the final /əs/ to avoid a heavy, bouncing ending.
Common errors: flattening the second syllable into /moʊ/ without the slight /zi/ onset; misplacing the primary stress on the second syllable (ho-MO-zuhs) or suffix; pronouncing the final /əs/ as a hard /s/ rather than a reduced /əs/. Correction: emphasize the third syllable with /zi/ before the final schwa: ho-mo-ZI-əs; ensure the /zi/ is a voiced alveolar affricate onset and finish with a relaxed /əs/.
US tends to a more rhotic, taut /hoʊˈmoʊziəs/. UK often uses a less rhotic /həˈməʊziəs/ with a clearer/ɒ/ or /əʊ/ in the first two syllables and a rounded final /əs/. Australian tends toward /həˈmɒz.i.əs/ with a broader /ɒ/ in the second syllable and a lighter /j/ quality before the final /əs/. Focus on the /zi/ cluster and the final unstressed /əs/ in all accents.
Difficulties center on the three-syllable rhythm, the /z/ followed by a soft /i/ before the unstressed /əs/, and the potential vowel shifts in /ho/ vs /həʊ/ across dialects. The 'ho-mo' sequence can be confused with similar-looking “homo-” words that differ in stress. Practice holding the /zi/ clearly as a single syllable and softly reducing the final /əs/ to avoid a clipped ending.
A unique aspect is the -zygous suffix, pronounced as /ziəs/ or /ziəs/ in many dialects, which can be mistaken for /ziəs/ vs /zikəs/. The trick is the clear /zi/ following the stress and a light, almost inaudible final /əs/. Also ensure the middle syllable has the /z/ vowel sequence clearly voiced, so it doesn’t blur into /zɒ/ or /zə/.
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US: rhotic /r/ is not relevant here; focus on /hoʊ/ and the /ziəs/ cluster; UK: more rounded vowels, /əˈməʊziəs/ with longer /əʊ/ before /zi/; AU: broader vowel quality, /həˈmɒziəs/ with shorter /ɪ/ in the /zi/ portion. IPA references help: US /hoʊˈmoʊziəs/, UK /həˈməʊziəs/, AU /həˈmɒziəs/. Emphasize the third syllable’s /zi/ and keep final /əs/ light in all accents.
Homozygous derives from the combining form homo- meaning ‘same, identical’ from Greek homos, and the combining form -zygous from Greek zygotos meaning ‘yoked, joined together,’ from zygon meaning ‘yoke’ or ‘to join.’ In genetics, the term emerged in the early 20th century as scientists distinguished organisms carrying two copies of the same allele from those carrying two different alleles. The root homo- has long been used across scientific terms to denote sameness (homogeneous, homology), while zygous appears in words like heterozygous (two different alleles). The first robust genetic frameworks in the early 1900s popularized terms like homozygous as technicians and researchers formalized genotype descriptions. Over time, the word has become standard in medical and biological literature and education, often paired with recessive or dominant descriptors. Today, homozygous is routinely used in molecular genetics, plant breeding, and clinical genetics to indicate allelic identity and predict phenotype consistency. The usage evolved from a need to specify precise allelic configurations in Mendelian genetics, enabling clearer discussion of inheritance, screening, and genetic counseling. The term is now entrenched in standard genetic nomenclature and teaching, reflecting its precise descriptive power in distinguishing identical-by-gene configurations from heterozygous or compound heterozygous states.
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Words that rhyme with "Homozygous"
-ous sounds
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