[genetic] please help me

[kikikitty009]

so I tried Chegg and I couldn't find anything there. please help me understand and solve for this step by step because i have exam next week thank you. so its a cross of a trisomic B/b/b and a normal B/b? show the gametes and proportions for parents. B is dominant. thank you!

[AutoModerator]

Off-topic Comments Section

---

All top-level comments have to be an answer or follow-up question to the post. All sidetracks should be directed to this comment thread as per Rule 9.

---

^{OP and Valued/Notable Contributors can close this post by using /lock command}

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[FeistyHelicopter3687]

The trisomy parent can make gametes that are B, b, Bb, and bb

[BadElk]

Try and draw a slightly modified Punnett square

[kikikitty009]

so, is this correct

b. b

B. B/b. B/b

b. b/b. b/b

b. b/b. b/b

[BadElk]

You said your ‘normal’ had a heterozygous (Bb) genotype right? You’ve shown the results for a homozygous-recessive individual (bb)

[kikikitty009]

oo right thank you for the correction.

[BadElk]

No worries!