Bio 1 Exam 4 Review

Who created the first chromosome map?

Scientist and friar Gregor Johann Mendel, father of modern Biology, began studying heredity in 1843

During meiosis, homologous chromosome pairs migrate as__________that are _______ of other chromosome pairs.

What is a Gene?

Boveri-Sutton Chromosomal Theory of Inheritance explains what?

Gamete chromosomes combine during fertilization to produce?

Walter Sutton observed combination of chromosomes into daughter cells during grasshopper meiosis

How many abnormal gametes during meiosis 2?

Each parent synthesizes gametes that contain how much of their chromosome compliment?

Euploidy is correct number of chromosomes

What is the long arm in a chromosome?

What is trisomy

Define chromosome

What is monosomy?

Barbara McClintock & Harriet disproved crossover of homologous chromosomes in corn plants.

Dr. Thomas Hunt Morgan crossbred fruit flies to understand how genes/traits were passed

What is a crossover?

When can nondisjuction occur?

Though sperm and eggs differ in size and morphology, they have the same number of chromosomes

What can be a cause of nondisjunction?

What is Aneuploidy?

Chromosome sorting from each homologous pair into pre-gametes appears to be ______?

Curt Stern demonstrated homologous ______ in fruit flies?

 Recombination frequency determined how far apart genes were on chromosome.

Risk of nondisjunction occurring decreases with parental age

How many abnormal gametes during Meiosis 1?

Genetic disorders involving alterations in chromosome number or structure may have?