![The genetic diagram shows a monohybrid cross. B is the dominant allele and b is the recessive allele: Which of the parents and offspring are heterozygous ? The genetic diagram shows a monohybrid cross. B is the dominant allele and b is the recessive allele: Which of the parents and offspring are heterozygous ?](https://d10lpgp6xz60nq.cloudfront.net/physics_images/OSW_GRU_MCQS_ICSE_X_SM1_V02_BIO_C02_E01_053_Q01.png)
The genetic diagram shows a monohybrid cross. B is the dominant allele and b is the recessive allele: Which of the parents and offspring are heterozygous ?
![Sex-linked genetic disorders colour blindness haemophilia inheritance of blood groups A B AB O igcse/O level/gcse 9-1 biology revision notes examinations Sex-linked genetic disorders colour blindness haemophilia inheritance of blood groups A B AB O igcse/O level/gcse 9-1 biology revision notes examinations](https://www.docbrown.info/ebiology/ebiopics/genetics7a.gif)
Sex-linked genetic disorders colour blindness haemophilia inheritance of blood groups A B AB O igcse/O level/gcse 9-1 biology revision notes examinations
![genetics inheritance of characteristics dominant recessive genes alleles homozygous heterozygous genotype phenotype gene expression monohybrid genetic diagram Punnett square Mendel pea plants cystic fibrosis sickle cell disease anaemia igcse/O level ... genetics inheritance of characteristics dominant recessive genes alleles homozygous heterozygous genotype phenotype gene expression monohybrid genetic diagram Punnett square Mendel pea plants cystic fibrosis sickle cell disease anaemia igcse/O level ...](https://www.docbrown.info/ebiology/ebiopics/genetics4.gif)