AP BIOLOGY

HEREDITY

INCOMPLETE DOMINANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Heterozygous (hybrid) or Homozygous (purebred)?TT
A
Heterozygous (hybrid)
B
Homozygous (purebred)
Explanation: 

Detailed explanation-1: -Purebred-Also called HOMOZYGOUS and consists of gene pairs with genes that are the SAME. Hybrid-Also called HETEROZYGOUS and consists of gene pairs that are DIFFERENT. Genotype is the actual GENE makeup represented by LETTERS. Phenotype is the PHYSICAL appearance of a trait, such as a YELLOW (or BLUE) body color.

Detailed explanation-2: -An organism can be either homozygous dominant (TT) or homozygous recessive (tt). If an organism has two different alleles (Tt) for a certain gene, it is known as heterozygous (hetero means different).

Detailed explanation-3: -Final answer: Hybrid is heterozygous.

Detailed explanation-4: -When the GENOTYPE is made up of one capital letter & one lowercase letter (ex: Tt) it’s called HETEROZYGOUS ("hetero” means “other"). Just to confuse you, a heterozygous genotype can also be referred to as HYBRID.

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