chromosomal abnormality
英
美
- Chromosome abnormality is an important factor involved in male infertility and gonadal hypoplasis.
染色体异常是影响男性不育和性腺发育不全的重要因素。
- The majority of aberrations are sporadic although on rare occasions a chromosomal disorder is directly inherited.
尽管偶尔可见一种染色体疾病是直接遗传的，但是大量的染色体异常是散发的。
