7c genotypes and phenotypes

Question 1

dominant and recessive genes

Answer 1

Not all alleles of a particular gene are expressed equally
In most cases one will be dominant and mask the expression of the other allele in an organism’s phenotype
We express this information in a genotype
Dominant alleles have a capital letter, whereas recessive alleles have a lowercase letter

Question 2

HETEROZYGOUS and HOMOZYGOUS genes are

Answer 2

Every diploid organism inherits a particular combination of 2 alleles from their parents
If both the alleles inherited are identical they are said to be homozygous for that gene
When an individual inherits 2 different alleles for the same gene, they are heterozygous for that gene