Populations

Question 0

Homozygous v. Heterozygous

Answer 0

Homozygous | individual possesses either both dominant or both recessive alleles

Heterozygous | individual possesses both forms of an allele (hybrid)

Question 1

Phenotype v. Genotype

Answer 1

Phenotype | physical trait coded for by genes

Genotype | genetic make up of organism

Question 2

Locus

Answer 2

Physical position of gene within chromosome

Question 3

First Law of Heredity || Law of Segregation

Answer 3

|| all gametes have equal probability of having any allele given that alleles segregate independently when forming gametes

|| heterozygous individuals express dominant phenotype, not a blend of both recessive and dominant (principle of complete dominance)

Question 4

Partial dominance

Answer 4

Organism exhibits a cross between phenotypes of homozygous counterparts

Question 5

Allele

Answer 5

All variations of a given gene

Question 6

Dihybrid Cross

Answer 6

|| assuming Law of Independent Assortment, phenotypic ratio 9:3:3:1

Question 7

Sex Chromosomes

Answer 7

|| 23rd chromosome pair different for males (XY) and females (XX)
|| sex-linked alleles not usually found on Y, so whatever allele is found in his X (recessive or dominant) will be expressed
|| females may be carrier for recessive sex-linked alleles

Question 8

Barr body

Answer 8

Random assortment of X chromosomes in females that undergo condensation to remain inactive (can be one carrying either allele, but dominant allele still is expressed

Question 9

Karyotype

Answer 9

Map of chromosomes

Question 10

Taxonomical Classification

Answer 10

Kingdom | Phylum | Class | Order | Family | Genus | Species