IGCSE Biology - Monohybrid Inheritance & Codominance

Front

Hadi: I^AI^o, Siti: I^BI^o. What are the chances their child shares the same blood group as either parent?

Back

1 in 2

Front

What term is used to describe a version of a gene?

Back

allele

Front

What term is used to describe an organism that carries two identical alleles for a gene?

Back

homozygous

Front

What term is used to describe an organism that carries two different alleles for a gene?

Back

heterozygous

Front

Observable features of an organism due to its genotype

Back

phenotype

Front

Which of the following statements are true of codominance? I. Both alleles are expressed in a person who is heterozygous II. More than two phenotypes are usually possible III. The ABO blood group system is an example of it

Back

I, II and III

Front

What must be true about Gary and Fiona if their child has a genetic disease caused by a recessive allele?

Back

Gary and Fiona are both heterozygous

Front

Phenotype and genotype of a plant with two different alleles of gene G resulting in green seed.

Back

Phenotype: Green seed, Genotype: Heterozygous

Front

What is the correct description of the genotype Aa?

Back

heterozygous, with two different alleles of the same gene

Front

What is the probability that the second child of parents who do not have albinism will be born with albinism?

Back

25%