7th Science Ch. 4 Vocabulary

6 Written Questions

1. The basic unit of heredity that consists of a segment of DNA on a chromosome
2. A ratio that states the number of times an outcome is likely to occur out of a possible 100 times
3. A female reproductive cell or gamete that forms in the reproductive organs of a female and has just a single copy of the genetic material of the parent
4. A comparison between two quantities, often written with a colon, as 3:4
5. A term that describes the allele that determines the phenotype of an individual organism when two different copies are present in the genotype
6. A part of sexual reproduction in which cells divide to form sperm cells in a male and egg cells in a female. This only occurs only in reproductive cells

6 Multiple Choice Questions

1. A male reproductive cell or gamete that forms in the reproductive organs of a male and has just a single copy of the genetic material of the parent.
   1. Gene
   2. Gamete
   3. Egg
   4. Sperm
2. The passing of genes from parents to offsprin; the genes are expressed in the traits of the offspring
   1. Heredity
   2. Ratio
   3. Gamete
   4. Gene
3. An alternate form of a gene for a specific trait or gene product
   1. Gene
   2. Egg
   3. Allele
   4. Gamete
4. The likelihood or chance that a specific outcome will occur out of a total number of outcomes
   1. Ratio
   2. Allele
   3. Probability
   4. Heredity
5. A term that describes an allele that is not expressed when combined with a dominant form of the gene
   1. Reccessive
   2. Meiosis
   3. Heredity
   4. Percentage
6. A chart used to show all the ways genes from two parents can combine to form offspring with genetic material from both cells
   1. Genotype
   2. Percentage
   3. Punnet Square
   4. Phenotype

5 True/False Questions

1. Gamete → The basic unit of heredity that consists of a segment of DNA on a chromosome

   True        False

2. Genotype → The genetic makeup of an organism; all the genes that an organism has

   True        False

3. Sexual Reproduction → A type of reproduction in which male and female reproductive cells combine to form offspring with genetic material from both cells

   True        False

4. Phenotype → The genetic makeup of an organism; all the genes that an organism has

   True        False

5. Fertilization → A comparison between two quantities, often written with a colon, as 3:4

   True        False