Chapter 3 Heredity

Review

Question 1

• Humans have how many chromosomes in body cell?

Answer

• 46

Question 2

• True or False: At present, there are no cures for human genetic disorders.

Answer

• TRUE, most treatments work with symptoms.

Question 3

• Name two genetic disorder.

Answer

• Hemophilia

• Colored blindness

• Male patterned baldness

• Sickle cell anemia

• Down Syndrome

Question 4

• What is it called when we take a picture of a cell during mitosis and cut and paste to match up the chromosomes?

Answer

• Karyotype

Question 5

• What is the bleeder’s disease called?

Answer

• Hemophilia

Question 6

• Blood types have 3 different alleles which makes this an example of _______ alleles.

Answer

• MULTIPLE

Question 7

• Name a disease that can be inherited from parents.

Answer

• Hemophilia

• Colored blindness

• Male patterned baldness

• Sickle cell anemia

Question 8

• Can Influenza be inherited? Also known as the FLU?

Answer

• NO

Question 9

• What is an allele?

Answer

• Different forms of the same gene

Question 10

• Describe Sickle Cell Anemia.– What kind of cells are they?– What about them changes if you have sickle

cell anemia?

Answer

• Blood cells

• Not a normal shape - pointy

Question 11

• Explain how sex-linked traits are passed from parent to offspring.– Father – pass it to _________– Mothers – pass it to _________ or ________

Answer

• Fathers– Daughters to be carrier

• Mothers– Sons to have disease– Daughters to be carriers

Question 12

• What Meiosis?

Answer

• When chromosomes are reproduced to prepare for production of new SEX CELLS

• Egg or Sperm

Question 13

• What do we call it when two chromosomes do not separate during meiosis?

Answer

• Nondisjunction

Question 14

• Name a sex-linked trait… or disease we discussed?

Answer

• Hemophilia

• Colored blindness

• Male Patterned Baldness

Question 15

• Gene therapy means we are using pieces of DNA to change our ________.

Answer

• DNA, chromosomes, genes…

Question 16

• Is Cystic Fibrosis and inherited or noninherited disease?

Answer

• Inherited

Question 17

• How many human alleles control your blood type?

Answer

• 3

A B O

Question 18

• Sex-linked traits are carried on which chromosome?

Answer

• X Chromosome

Question 19

• What do we call a diagram that shows the path of an inherited disease through a family?

Answer

• PEDIGREE

Question 20

• How often is Down Syndrome present in newborns?

Answer

• 1:700

Question 21

• Name one characteristic of a Down Syndrome child?

Answer

• Broad hands and feet

• Short fingers and toes

• Flat bridge of nose

• Flat space between 1st and 2nd toe

Develop 5 questions from your notes that were missed in this review?