Name: ______Date: ______Period: ____
Chapters 11 Test: Intro to Genetics
1) A change in a gene due to damage or being copied incorrectly is called
2) Budding, a form of asexual reproduction, is used for
3) The passing of traits from parents to offspring is called
4) The phenotype of an organism
5) If an individual possesses two recessive alleles for the same trait, the individual is said to be
6) Tallness (T) is dominant to shortness (t) in pea plants. What represents a genotype of a pea plant that is heterozygous for tallness?
7) Traits, like skin color in humans, that are produced by the interaction of several genes are said to be
8) The scientific study of heredity is called
9) The four o’clock plant flower has 3 possible phenotypes: red, pink, and white. Pink is produced by a heterozygous genotype for flower color. Situations like this, in which one allele for a gene is not completely dominant over another allele for that gene, are called
10) Mendel's finding that the inheritance of one trait had no effect on the inheritance of another became known as the law of
11) What would be the blood type of a person who inherited an A allele from one parent and a B allele from the other?
12) What pattern of inheritance is the previous question an example of?
13) Gametes are produced by the process of
.
14) Unlike mitosis, meiosis results in the formation of (2 / 4) genetically (identical / different) cells.
In rabbits, black fur (B) is completely dominant to brown fur (b). Consider the following cross between two rabbits. (Parental [P] generation crossed to produce F1 generation)
15) Refer to the illustration left. The device shown, which is used to determine the probable outcome of genetic crosses, is called a
16) Refer to the illustration left. Both of the parents in the cross are
17) Refer to the illustration left. The phenotype of the offspring indicated by box 3 would be
18) Refer to the illustration left. The genotypic ratio of the F1 generation (offspring) would be
19) Homologous chromosomes are pairs of chromosomes containing DNA that code for ______genes.
20) How many chromosomes are in the body cells of an organism that has a haploid number of 8?
21) The diploid number of chromosomes in a human skin cell is 46. The number of chromosomes found in a human ovum (egg) is
22) The number of chromosomes in a gamete is represented by the symbol
23) When crossing-over takes place, homologous chromosomes
24) What is shown in the figure left?
25) The formation of sperm cells is called
26) Refer to the illustration to the left. The process shown is
27) During cytokinesis in the female sex cell, what divides unequally?
28) In cows, long hair is dominant to short hair. In a cow that is heterozygous for long hair, what are the chances that the cow will pass the dominant allele to an offspring?
SOL Test Questions
29)30)
31)32)
33)34)
35)
Label the phase of Meiosis. Be sure to also identify as part of Meiosis I or Meiosis II.
36)37) 38)
______
Definitions:
39) Gamete
40) Allele
41) Trait
42) Tetrad
43) Gene
44) Probability
45) Crossing-over
46) Meiosis
47) Mitosis
48) Homologous
49) Homozygous
50) Heterozygous