(a) Explain the following terms: (i) test cross (ii) monohybrid cross. (b) In a mango...
BIOLOGY
WAEC 2015
(a) Explain the following terms:
(i) test cross
(ii) monohybrid cross.
(b) In a mango plant the, the allele for bean-shaped seed is r and is recessive to round-shaped seed R. With the aid of a genetic diagram, determine the genotypes of the offspring if:
(i) a homozygous bean-shaped parent with a homozygous round shaped parent;
(ii) a heterozygous bean-shaped parent is crossed with a heterozygous round shaped parent.
Explanation
(a)Test cross;This is the crossing/mating of an organism of unknown genotype with a homozygous recessive/double recessive organism;to determine the genotype of an organism.
(ii)monohybrid cross; Is a genetic cross between parents that differ in the alleles they posses; for one particular gene
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *