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7. If offspring exhibit a 3:1 phenotypic are the parents genotypes? f purple flower color in a plant is controlled by the al
untington disease is an inherited neurological condition that is fatal. Unfortunately, a person does not know he or she has t
14. Cystic fibrosis is a recessive disorder ( If one parent is homocy other parent is heterozygous, what is the pe homozygous
PRACTICE-GENETIC CROSS In humans, achondroplasia is a dominar of average height. Heterorygous indiv morygous recessive indivi
Observing Human Traits Figure 10.7 shows several easily recognized human traits that d human traits that are controlled by a
Genotype of fathers gametes Ee Ee Genotype of mothers gametes Ee Ee Doc Figure 10.2: Earlobe attachment Punnett square PRAC
PRACTICE ans, the presence of freckles is due to a dominant allele on and the absence this information non-freckled condition
ACTICE PEDIGREE-RECESSIVE INHERITANC ample, you will follow album, a recessively inherited ne person with normal skin pigment
PRACTICE PEDIGREE-DOMINANT INHERITANCE PATTERN In this example, you will follow a common form of dwarfism called achondroplas
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Answer #1

Answer:

7).

If both parents are heterozygous, then the phenotypic ratio would be 3:1.

Tt (tall) x (tall) Tt –Parents

T

t

T

TT (Tall)

Tt (Tall)

t

Tt (tall)

tt (Dwarf)

Phenotypic ratio = Tall : Dwarf = 3:1

8).

The dominant color would be purple as it is represented by capital letter.

9).

Pp (heterozygous purple) x (white) pp ----Parents

p

P

PP (purple)

p

pp (white)

Purple : white = 1:1

10).

50:14 ratio is more or less equal to 3:1 ratio. Hence, the both parents would be heterozygous and their genotype would be Pp.

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