7. Cheryl and her sister have attached earlobes. vet their parents have unattach
ID: 3166475 • Letter: 7
Question
7. Cheryl and her sister have attached earlobes. vet their parents have unattached ones. Unattached earlobes are dominant over attached. Give the genotypes of Cheryl, her sister, and their parents. Sisters: Parents: 8. If both your parents have a continuous hairline (cc), what best describes your possibilities for getting a widow's peak type of hairline? 9. In summer squash, white fruit color (W) is dominant over yellow fruit color (w) and disk-shaped rut (D) ?s dominant over sphere-shaped fruit (d). a) If a squash plant true-breeding for white, disk-shaped fruit is crossed with a plant true- breeding for yellow,sphere-shaped fruit, what will the phenotypic ratios be for their offspring (the F1 generation)? P generation: Gametes formed for each parent Result of the cross F1 generation: b) if two individuals from the F1 generation are crossed, what will the phenotypic ratios of the next generation (the F2 generation) be? Show your answers in a Punnett square and write down ratios of phenotypes.Explanation / Answer
Answer:
7).
Unattached earlobe allele = E ; Attachted earlobe = e
Sister’s genotypes: ee
Parent’s genotype: Both parents would be heterozygous for unattached earlobe, Ee.
8). Widow’s peak type of hairline is the autosomal dominant over continuous hairline. If both parents are continuous hairline, ther is no chance of having widow’s peak children.
9).
a).
P generation: White, disk-shaped (WWDD) x (wwdd ) Yellow, sphere-shaped ---Parents
Gametes formed: WD wd
Result of the F1 cross F1 generation: WwDd (White, disk-shaped)
b).
WwDd x WwDd
WD
Wd
wD
wd
WD
WWDD (white, disk-shaped)
WWDd (white, disk-shaped)
WwDD (white, disk-shaped)
WwDd (white, disk-shaped)
Wd
WWDd (white, disk-shaped)
WWdd (white, sphere-shaped)
WwDd (white, disk-shaped)
Wwdd (white, sphere-shaped)
wD
WwDD (white, disk-shaped)
WwDd (white, disk-shaped)
wwDD (yellow, disk-shaped)
wwDd (yellow, disk-shaped)
wd
WwDd (white, disk-shaped)
Wwdd (white, sphere-shaped)
wwDd (yellow, disk-shaped)
wwdd (yellow, sphere-shaped)
F2 phenotypic ratio: 9:3:3:1
White, disk-shaped (9): White, sphere-shaped (3) : Yellow, disk-shaped (3) : Yellow, sphere-shaped (1)
WD
Wd
wD
wd
WD
WWDD (white, disk-shaped)
WWDd (white, disk-shaped)
WwDD (white, disk-shaped)
WwDd (white, disk-shaped)
Wd
WWDd (white, disk-shaped)
WWdd (white, sphere-shaped)
WwDd (white, disk-shaped)
Wwdd (white, sphere-shaped)
wD
WwDD (white, disk-shaped)
WwDd (white, disk-shaped)
wwDD (yellow, disk-shaped)
wwDd (yellow, disk-shaped)
wd
WwDd (white, disk-shaped)
Wwdd (white, sphere-shaped)
wwDd (yellow, disk-shaped)
wwdd (yellow, sphere-shaped)
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.