Unit 15 GENETICS (INCLUDING MONOHYBRID, DIHYBRID, SEX-LINKED TRAITS, MULTIPLE ALLELES, INCOMPLETE DOMINANCE & CODOMINANCE, AND PEDIGREES)

Question 1

Mendelian inheritance has ______________ and _____________ corsses in __________ square.

Answer 1

monohybrid, dihybrid, punnett

Question 2

There is also non-Mendelian inheritance, which is sex-linked traits and multiple alleles. For sex-linked recessive trait, what are these symbols means?

X^R y _____ ____________
X^r y ____ _______________

X^R X^R ________ ___________, _____ _______

X^R X^r ______________, ___ _________, ________

X^r X^r ___________ ____________, ______ ___________

Answer 2

no disorder
has disorder

Homozygous dominant, NO disorder
Heterozygous, NO disorder, carrier
Homozygous recessive, HAS disorder

Question 3

In completing Punnett square, (female/male) goes first, and followed by (big letter/small letter)

Answer 3

Female, BIG letter

Question 4

What’s the difference between INCOMPLETE DOMINANCE and CODOMINANCE?

Answer 4

Incomplete dominance: Not fully expressed (e.g. red flower + white flower = pink flower Rr)

Codominance: BOTH alleles are fully expressed

Question 5

_________ can be used to tell wether it be a ____ - _____ trait or an ___________ trait

Answer 5

Pedigrees, sex-linked, autosomal