Question

How many types of gametes will be produced by individuals of AABbcc genotype?
(a) Two
(b) Four
(c) Six
(d) Nine

Answer 1

Hint: A genotype is an organism's complete set of heritable genes, or genes which will be passed down from parents to offspring. These genes help encode the traits that are physically exhibited in an organism.

Complete answer: AABbcc will produce 2 types of gametes which are as follows- ABc, Abc. The number of gametes formed is set by the number of heterozygous alleles present within the given genotype. $2^n$ is that the formula wont to find it out, where n=number of heterozygous alleles present within the genotype. Say for instance, within the above genotype AABbcc, here AA and cc are representing homozygous states and Bb is representing heterozygous states. So, here n = 1. Putting the values within the formula, we get $2^1=2$. Hence 2 types of gametes are formed, which are ABc and Abc.
Any given gene will usually cause an observable change in an organism, referred to as the phenotype. The terms genotype and phenotype are distinct for a minimum of two reasons, which are - To discriminate the source of an observer's knowledge (one can realize genotype by observing DNA; one can realize phenotype by observing outward appearance of an organism) . - Genotype and phenotype aren't always directly correlated. Some genes only show a given phenotype in specific environmental conditions. While, some phenotypes can be the outcomes of multiple genotypes.
So, the correct answer is ‘Two’.

Note: The genotype is usually involved with the phenotype which describes the top results of both the genetic and the environmental factors giving the observed e.g. blue eyes, hair color, or various hereditary diseases) .