NAME____________________________

HEREDITY REVIEW

Define the following in your own words: heredity, genetics, traits, gene, allele, dominant, recessive, phenotype, genotype, homozygous, heterozygous, segregation, independent assortment, incomplete dominance, and multiple alleles, Punnett square, gamete, diploid, haploid, homologous chromosomes, crossing over, probability, monohybrid, dihybrid

Who was Gregor Mendel, what did he work with, what did he discover.

What is the probability of having a boy or a girl from a single birth?_______________

What is the probability of the following five births happening in this order? Boy, boy, boy, boy, girl?_______________

What is crossing over? When does it occur?

What is the difference between dominance and incomplete dominance?

What is a test cross?

	HOMOZYGOUS DOMINANT			HETEROZYGOUS			HOMOZYGOUS RECESSIVE
TRAIT	SYMBOL		LOOKS LIKE	SYMBOL	LOOKS LIKE		SYMBOL	LOOKS LIKE
Seed coat color	BB	Brown		Bb		Brown	bb		White
Seed coat shape	RR	Round		Rr		Round	rr		Wrinkled
Pod color	GG	Green		Gg		Green	gg		Yellow
Height of plant	TT	Tall		Tt		Tall	tt		Short
Color of flower	CC	Red		Cc		Pink	cc		White

Do these crosses:

TT x tt

Genotypic ratio________________ Phenotypic ratio______________________

Bb x Bb

Genotypic ratio________________ Phenotypic ratio______________________

Cross two plants both of which are heterozygous for seed coat shape.

Genotypic ratio________________ Phenotypic ratio______________________

Cc x Cc

Genotypic ratio________________ Phenotypic ratio______________________

TtBb x TtBb

Phenotypic ratio______________________

TTRR x ttrr

Phenotypic ratio______________________

BbGg x BbGg

Phenotypic ratio______________________

Perform a test cross on a tall plant that may or may not be heterozygous? (T=tall, t=short)