AP BIOLOGY

HEREDITY

LAW OF DOMINANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The appearance of an organism, such as smooth versus wrinkled seeds, is referred to as a:
A
Genotype
B
Variety
C
Phenotype
D
Allele
Explanation: 

Detailed explanation-1: -Phenotype-literally means “the form that is shown"; it is the outward, physical appearance of a particular trait. Mendel’s pea plants exhibited the following phenotypes:-round or wrinkled seed phenotype.-yellow or green seed phenotype.-red or white flower phenotype.

Detailed explanation-2: -The shape of the pea seeds is controlled by two alleles. S is dominant alleles and stands for smooth and s is recessive allele and stands for wrinkled. The wrinkled phenotype is shown when the genotype contains both the recessive alleles. The genotype of the wrinkled seeds of pea is ss.

Detailed explanation-3: -Phenotype refers to an individual’s observable traits, such as height, eye color and blood type. A person’s phenotype is determined by both their genomic makeup (genotype) and environmental factors.

Detailed explanation-4: -The wrinkly phenotype is associated with amino acid substitutions in the master repressor of biofilm-related genes, SinR.

Detailed explanation-5: -With one locus and additive effects we have three phenotypic classes: AA, Aa and aa.

There is 1 question to complete.