Question

please explain in depth 2&3

1. Which of the following is most inclusive? a. allele b. genotype 2. Dominant alleles are represented by: 11 a. an upper case letter LE b. a lower case letter c. it does not matter what type of letter is used 3. In fruit flies, gray body color is dominant over black body color. Using the letter G to represent body color, what is the genotype of a heterozygous gray bodied fly? a. GG b. gg c. Gg d. GGgg 4. All of the offspring of two gray bodied flys are also gray. What can you conclude about the genotypes of the parent flies? a. They are both heterozygous b. They are both homozygous dominant

Answer 1

the correct option is b genotype is more inclusive than Allele.

Allele is the alternative form of the gene while genotype consist of both the allele and is one of the genetic makeup of the cell which determines the promotion can you type of a particular character

the correct option is A. the dominant allele is denoted by an uppercase letter.

as we know allele is an alternative form of the gene. for each character there are two alternative forms of traits which allele are controlled by two alleles. one of them is dominant over the other (recessive)i the presence of both dominant and recessive allele the dominant allele mask over the recessive allele and the phenotype is produced by the dominant allele. to study the genotype we have to represent both the early differently so most of the scientists consider uppercase letter for dominantly and lowercase letter for recessive allele.

the correct option is C (Gg).

in heterozygous condition both the dominant and recessive allele are present and the phenotype is produced by the dominant allele. so here the dominant "G" gives phenotype grey body colour and recessive allele "g" gives out phenotype of black colour. so the phenotype produced will be determined by the dominant allele"G" that is grey colour.

the correct option is b. they are both homozygous dominant

GG × GG

all the offsprings of the two grey bodied flies are also grey this hints that there is no possible combination of of recessive allele that is gg which would produce black colour. this implies that any the parent does not have any recessive allele