25. Genetics is the study of how _________ are passed down from parents to offspring, which determine the traits we inherit.
Genes
100
20. Where are chromosomes located in the cell?
Nucleus
100
15. A TT (tall) plant is crossed with a tt (short) plant.
What percentage of the offspring will be tall?
100 %
100
10. Tall is dominant, Short is recessive
A Tt plant is crossed with a Tt plant. What percentage of the offspring will be short?
25 %
100
5. When two alleles of a gene are the same, its genotype is said to be ___________.
Homozygous
200
24. Every trait we have is determined by a combination of how many genes?
2
200
19. A gene contains genetic information for how many traits?
One
200
14. What information does the inside of each box on a Punnett square give us?
The genotypes of the offspring
200
9. What information does the outside of each box on a Punnett square give us?
The genotypes of the Parents
200
4. When two alleles of a gene are different, its genotype is said to be ___________.
Heterozygous
300
23. Using the letter B, what are two possible dominant genotypes?
BB, Bb
300
18. What is a gene?
A gene is a segment (piece) of DNA on a chromosome
300
13. John is heterozygous for his brown hair. His wife has blonde hair. What is the probability that their children will have blonde hair?
50%
300
8. A short plant that has a recessive genotype is crossed with a tall plant that is homozygous dominant. What is the probability that the plant will be short?
0%
300
3. Rich is Bb and Sarah is bb for eye color. Brown eyes is the dominant trait and blue eyes is the recessive trait. What is Sarah's phenotype? What is Rich's genotype?
Sarah: Blue eyes
Rich: Bb
400
22. Each parent passes down how many genes to their offspring for each trait?
One
400
17. From the diagram, identify the parts labeled A through E
A) DNA
B) Cell
C) Gene
D) Chromosome
E) Nucleus
400
12. Two heterozygous black haired rabbits are crossed, what is the probability they will have offspring with black hair?
75 %
400
7. Two short feathered birds are crossed. If short feathers is the recessive trait, what is the probability that their offspring will inherit long feathers?
0 %
400
2. Using the letter B, write a homozygous dominant genotype
BB
500
21. Who is known as the "Father of Genetics" who studied patterns of inheritance from the traits of pea plants?
Gregor Mendel
500
16. Arrange the following from most simple to most complex:
Nucleus, Gene, Chromosome, Cell
Gene, Chromosome, Nucleus, Cell
500
11. A homozygous dominant father with straight hair has offspring with his wife who has curly hair . What is the probability that their grandchildren will have curly hair if they have offspring with someone who is heterozygous for this trait?
25 %
500
6. Black hair is dominant,blonde hair is recessive
Two parents have a 50 % probability of having offspring with either black or blonde hair. The mother has blonde hair. What is the genotype of the father (using letter B)?
Bb
500
1. Different forms of a gene are referred to as ________.