Show:
Natural Selection/Evolution & Bioengineering
DNA/ DNA Replication
Heredity, Punnett Squares, Pedigree Charts (Family Trees)
Mitosis and Meiosis
Boom Shaka Laka
100
A basic unit of hereditary information that influences a particular trait or group of traits is
gene
100
A nucleotide is made up of a sugar, a phosphate, and a __.
base
100
If two parents with the genotype Bb have children, what are the probabilities of each possible genotype of their children?
25% BB
50% Bb
25% bb
100
Asexual reproduction = ___________

Sexual reproduction = ____________

(choices- mitosis and meiosis)
asexual = mitosis
sexual = meiosis
100
In humans, a widow's peak is dominant to not having a widow's peak. Is it possible for two parents with a widow's peak to have a child without a widow's peak? How do you know?
YES! This is because both parents could be heterozygous for a widow's peak (Ww). This would leave a 25% chance of having a child without a widow's peak.
200
The theory of the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth is called
evolution
200
The passage of genetic instructions from one generation to the next generation is called
heredity
200
The structure in the nucleus of a cell that contains its genetic material is called a(n)
chromosome
200
In asexual reproduction, offspring is ______ the parent.

a. different than
b. identical to
c. similar to
b. identical to
200
True or false:
The offspring of a sexually reproducing organism has DNA that matches the DNA of its parent.
FALSE! That would be ASEXUALLY reproducing

Sexually reproducing organisms receive half of its genetic material from each parent.
300
Organisms with an advantage are more likely to thrive, reproduce, and pass their traits to future generations than organisms without favorable traits. What is this concept called?
Natural Selection
300
The enzyme that breaks the hydrogen bonds that hold the bases together is called
helicase
300
The outward physical appearance and behavior of an organism
phenotype
300
What is the most important benefit of sexual reproduction?
genetic variation of offspring
300
Why is it that identical twins have the same genetic information?
They started as one zygote, and then split into two. So the DNA was the same, and replicated. The same DNA went to each new zygote.
400
Give an example of Natural Selection in your own words.
(answers vary)
400
Put the steps of DNA replication in order.

A. Complementary Base Pairing
B. Continuous and Discontinuous
C. Completing the Joins
D. Unwinding/Unzipping
D, A, C, B
400
In a species of flower, red (R) is dominant and pink (r) is recessive. One flower is homozygous red and it is crossed with a pink plant. What is the probability of its offspring being red in color?
100%
400
Which is an advantage of mitosis?

a. takes more energy
b. does not require a mate
c. every organism in the world can reproduce using mitosis
b. does not require a mate
400
If a trait in a Pedigree Chart seems to skip a generation, it is likely that that trait is _______ .
recessive
500
What is an example of a BENEFIT of genetic engineering?
(answers may vary)
500
What are the names of the 4 bases?
adenine, thymine, cytosine, guanine
500
In humans, brown hair is dominant and blonde hair is recessive. James has blonde hair. His mother has blonde hair, but his father has brown hair.

What is James' father's genotype? How do you know?
Bb because he must be a carrier of blonde hair, but he has to show brown hair.

(Note: you could have used any letter as long as one is capital and the other is lowercase)
500
Somatic cells reproduce using _____, while gametes reproduce using _____. (choices: meiosis and mitosis)
somatic = mitosis (asexual reproduction)
gametes = meiosis (sexual reproduction)
500
What is the difference between heterozygous and homozygous?
Heterozygous = one allele for each trait (hybrid)

Homozygous = two alleles for the same trait (purebred)