BIO152 Exam

Question 1

Parts of Meiosis

Answer 1

Meiosis 1
Prophase
Metaphase
Anaphase
Telophase and Cytokinesis

Question 2

What is sickle cell anemia

Answer 2

Sickle shape of blood cells, causing them not to carry oxygen properly and clog arteries.

Question 3

What are the levels of hierarchy of Biology?

Answer 3

Macromolecule
Organelle
Organ
Organism
Population

Question 4

What are the parts of a chromosome?

Answer 4

centromere: center of chromosome, divides it into its short and long part
telomere–> tip of chromosome, protects cell from getting frayed
Become so short that cell cant divide anymore and dies.

Question 5

what Non-disjunction affects all the cells?

Answer 5

Non-disjunction at Meiosis 1–> affects ALL gametes
Non-Disjunction at Meoisis 2–> affects 2 gametes

Question 6

What happens in Prophase in Mitosis?
Prophase in meiosis?

Answer 6

• chromatin condenses to make chromosomes
• Nucleus disappears

Question 7

What should a hypothesis include

Answer 7

“If this happens, then this will happen”

Question 8

Proximate vs Ultimate questions

Answer 8

HOW??
vs
Why???

Question 9

What Hardy Weinberg Equation for genotypes?
Allele

Answer 9

p^2+2pq+q^2=1
p+q=1

Question 10

10 parts of Experiment Question

Question 11

What is the CCR5

Question 11

What is the CCR5 gene. What does it cause

Answer 11

CCR5 gene mutation,
HIV immunity

Question 13

What is the CFTR caused by

Answer 13

Mutation in CFTR gene

Question 14

What is polyploidy?

Answer 14

which the cells of an organism have more than one pair of (homologous) chromosomes.

Question 15

What is aneuploidy

Answer 15

When an organism gains or loses one or more chromosomes but not a complete haploid set

Question 16

Sickle cell anemia gives what advantage? Common with what people ?

Answer 16

Heterozygous advantage for malaria. 1/12 african descent

Question 17

CCR5

Answer 17

Lack of CCR5 gene, so no CCR5 receptor protein made
- Stops HIV from being able to bind to surface of cell
Makes HIV immune
- very common and for european descent

Question 18

How is Lactose tolerance caused?

Answer 18

Lactose tolerance=mutation that creates lactase, which allows to consume lactose
More common in adults and places with agriculture and cattle animals