Here are the answers to your worksheet. I have worked through each section carefully to make sure the genetics rules are applied correctly.
Section 1: Heterozygous (He) vs. Homozygous (Ho)
Rule:
*
Heterozygous (He): The two letters are different (one capital, one lowercase). Example: *Aa*.
*
Homozygous (Ho): The two letters are the same (both capital or both lowercase). Example: *AA* or *aa*.
Answers:
* AA:
Ho
* Ee:
He
* Ii:
He
* Mm:
He
* Bb:
He
* ff:
Ho
* Jj:
He
* nn:
Ho
* Cc:
He
* Gg:
He
* kk:
Ho
* oo:
Ho
* DD:
Ho
* HH:
Ho
* LL:
Ho
* Pp:
He
---
Section 2: Determine Phenotypes
Rule:
* If a genotype has at least one
Capital Letter, it shows the
Dominant trait.
* It only shows the
Recessive trait if
both letters are lowercase.
Purple flowers (Dominant) vs. White flowers (Recessive)
* PP:
Purple (Has dominant P)
* Pp:
Purple (Has dominant P)
* pp:
White (No dominant P)
Bobtails in cats (Recessive) vs. Normal tails (Dominant)
*(Note: Since bobtails are recessive, you need two lowercase 't's to get a bobtail. Any 'T' means normal tail.)*
* TT:
Normal tail
* Tt:
Normal tail
* tt:
Bobtail
Brown eyes (Dominant) vs. Blue eyes (Recessive)
* BB:
Brown eyes
* Bb:
Brown eyes
* bb:
Blue eyes
Round seeds (Dominant) vs. Wrinkled seeds (Recessive)
* RR:
Round seeds
* Rr:
Round seeds
* rr: **W
Parent Tip: Review the logic above to help your child master the concept of heredity worksheet for middle school.
