Basics
Is Hair Color or Musical Ability a Trait?
Hair Color
Two forms of reproduction are:
Sexual and Asexual
A farmer wants cows that produce a high yield of milk. Over generations, he only reproduces cows that produce a lot of milk. What is this process called?
Artificial Selection
See the Punnet Square on the board. What should go in the bottom right hand corner?
Rr
What term means the passage of information from one generation to another?
Heredity
A dog breeder selects only his best animals to breed. What is this process called?
Artificial Selection
Humans contain a total of how many chromosomes?
46
Selective breeding can produce plants and animals with
desired traits
What is the percent the child will have Brown eyes?
100%
The definition of genetics is...
The study of genes
What are the X and Y chromosomes?
Chromosomes that determine gender
What is the term by which 2 parents contribute DNA to the offspring?
Sexual Reproduction
Leopard geckos, a type of lizard, are bred to be sold as pets. Humans have bred leopard geckos to alter their characteristics to become more desirable. Which best describes what this is called?
Selective Breeding
What is the percent chance the child will have red hair?
25%
DNA is located in the?
Nucleus
Heterozygous means that an organism has the same genes for a trait. True or False?
False
A benefit of asexual reproduction is that it provides genetic diversity. True or False.
False
What will most likely DECREASE genetic diversity?
A. Selective Breeding
B. Mutations
C. Increased reproduction
A. Selective breeding
Draw a Punnet Square that has one parent with a heterozygous genotype and the other parent with a homozygous dominant genotype. What is the chance the offspring has homozygous dominant genotype?
50%
Genes are code for specific what?
Traits
What is genetic engineering?
The manipulation of genetic instructions to produce new characteristics.
A hydra plant reproduces asexually. What percent of the offspring's genetics is the same as the parent's genetics?
100%
Holly was discussing selective breeding with her friend Kelsie. Holly told Kelsie that selective breeding does not have disadvantages and should always be performed. Is Holly's statement true or false and why?
Holly's statement is false because selective breeding can decrease the genetic diversity of a species.
See the Punnet Square on the board. Yellow is dominant to white. Based on the Punnet Square, which of the following is true?
A. The genotype FF produces white-colored fruit.
B. The genotype FF produces yellow-colored fruit.
C. The genotype Ff produces yellow-colored fruit.
D. The genotype ff produces white-colored fruit.
D is true.
Asexual reproduction contributes 100% of its genes to its offspring. It also produces
A. Identical offspring
B. Genetically distinct offspring
A