Show:
Vocabulary
DNA
Traits
Punnet Sqaures
Reproduction
100
Genetics
The study of heredity
100
DNA is most closely associated with: a)cytoplasm b)cell membrane c)chromosomes d)cell wall
What is CHROMOSOMES!
100
In the joining together of two different genes for the same trait, the one that appears is: a)Dominant b) Recessive c) Pure d) Mutant
What is DOMINANT!
100
Which type of letter represents a dominant trait and which type of letter represents a recessive trait?
What is Dominant (Capital letter) Recessive (Lowercase letter)
100
A change in genetic material that produces a variation in a species may be caused by: a)mutation b) competition c)overproduction of egg cells d) a struggle for survival
What is MUTATION
200
Heredity
How traits are passed down from generation to generation
200
Chromosomes are found in the: a)cytoplasm b)cell membrane c)nucleus d)cell wall
What is NUCLEUS!
200
Only red tulips result from the cross between PURE RED and PURE WHITE tulips. What statement is true? a) Red is dominant b) Red is recessive c)Red is more common in the warmer spring weather d) Red is a gene mutation
What is A) RED IS DOMINANT!
200
Draw a punnet square for a Hybrid parent reproducing with a Pure Dominant parent.
What is (answer will be drawn)
200
Mutations of genes can be caused by: a)x-rays, chemical, and water b)x-rays, chemicals, and temperature changes c)x-rays, chemicals, and ultraviolet radiation d)x-rays, ultraviolet radiation, and temperature changes
What is C) X-rays, chemicals, and ultraviolet radiation
300
Allele
Two forms of a gene
300
A gene is a small part of a: a)chromosome b)cell wall c)cell membrane d)chloroplast
What is CHROMOSOME!
300
In squirrels, gray (G) is dominant over black (g) fur color. If a Gg squirrel is crossed with a gg squirrel, what is the probability that the offspring will have black fur? a)0% b) 25% c) 50% d) 100%
What is C) 50%
300
Complete a punnet square with a pure recessive parent and a pure dominant parent.
What is (Answer will be drawn)
300
Which process is a common practice that has been used by farmers for hundreds of years to develop new plant and animal varieties? a) cloning b) genetic engineering by moving DNA c)selective breeding for desirable traits
What is C) Selective breeding for desirable traits
400
Dominant: Recessive:
What is Dominant is the gene that covers up the ffect of the other one. Recessive is the effect of the gene is hidden (unless two are present).
400
A change in the structure of DNA in the egg cell could result in a: a)clone b)new trait c)bud d)spore
What is NEW TRAIT!
400
How many chromosomes does the human body contain?
What is 46 CHROMOSOMES!
400
In pea plants, the trait for tall (T) is dominant over the trait for short (t) stems. Draw a punnet square for a hybrid parent reproducing with a pure recessive parent. If 250 pea plants were produced, how many would have short stems?
What is 125 pea plants!
400
The fact that offspring may have characteristics somewhat different from those of their parents is mainly due to: a)metamorphosis b) regeneration c) sexual reproduction d) asexual reproduction
What is C) Sexual Reproduction
500
Homozygous Heterozygous
What is Homozygous means purebred - both genes are the same Heterozygous means hybrid - both genes are different
500
What are chromosomes made up of?
What is GENES!
500
How many chromosomes are contributed by each parent, if the human body contains 46 chromosomes?
What is 23 CHROMOSOMES!
500
T - tall t - short Y- yellow y- green A plant that is TTYy would appear as: A plant that is Ttyy would appear as:
What is TTYy - Tall / Yellow Ttyy - Tall / Green
500
Sexually reproducing organism show a greater variation in traits than asexually reproducing organisms. This is because when organisms reproduce sexually.... a) more mutations occur b)the offspring inherit half of the genes from each parent c) only the genes from the mother appear in the offspring d) only the genes from the father appear in the offspring
What is B) the offspring inherit half of the genes from each parent