Genetics

Question 1

What can a trait be determined by?

Answer 1

Genes–dominant masks recessive and recessive masked by dominant

Question 2

What causes diseases that are inherited?

Answer 2

Genetics– can be dominant or recessive

Question 3

What is asexual and sexual reproduction?

Answer 3

Asexual– One parent–example clone, runner, budding (yeast), splitting(bacteria)
Sexual– 2 parents–ex. Does not have to be mommy and daddy, pollen and egg in flower, male and females parts of earthworm

Question 4

What is the only time the offspring of asexual reproduction is not the same?

Answer 4

Mutation can change gene in asexual reproduction

Question 5

What can reproduce sexually?

Answer 5

Most animals, most plants, most fungus, some single celled

Question 6

Asexually?

Answer 6

Bacteria, some fungus, some single cell, some plants

Question 7

Example of Homozygous dominant?

Answer 7

TT (same)

Question 8

Homozygous recessive?

Answer 8

tt (same)

Question 9

Heterozygous?

Answer 9

Tt (different)

Question 10

What does(T) represent?

Answer 10

Dominant

Question 11

What does (t) represent?

Answer 11

Ressevie

Question 12

What is the 50/50 Rule?

Answer 12

Both parents contribute 50% genes

Question 13

Who is the “Father of Genetics?”

Answer 13

Father Gregor Mendel–pea plants 3-4 generations, wide variety of characteristics

Question 14

Humans have _____ copies of each chromosome.

Answer 14

46

Question 15

Pairs of chromosomes

Answer 15

23

Question 16

Sex cell

Answer 16

23 ( parents give 50/50)

Question 17

Know Critter genetics. (Punnett Square)

Answer 17

Skye (blue tail color) & poppy (orange tail color)
Sky and poppy– P generation
Ocean and Lucy– F1
Ocean and lucy’s pups– F2

Question 18

Know color blindness sex linked traits (Punnett Square)

Answer 18

XX and Xy
X–X chromosome
Y– male chromosome
X–carries traits
Males three times more likely to get sex-linked traits

Question 19

Chances of you being male or female? Who made you male or female? (Punnett Square)

Answer 19

50/50
Dad made the kids male or female
Depends on if dad give X or Y chromosome

Question 20

Who gives male sex-linked traits?

Answer 20

The Mom