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DNA and Punnett Squares Flashcards | StudBud
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DNA and Punnett Squares
DNA and Punnett Squares
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1
If R=red and r=white, then the probability of a red offspring is:
100%
25%
0%
50%
2
Which of the following is FALSE about sex chromosomes in humans?
If you have XX, you are female.
If you have XY, you are male.
Sex chromosomes carry only traits for gender determination.
If you have XY, you are female.
3
If a=albinism and A=normal, the probability of having an albino offspring would be:
100%
0%
25%
50%
4
Which of the following has all homozygous genotypes?
AA,ff, LL, TT
gg, hh, Rr, TT
AA, Ff, LL, TT
Gg, Hh, Rr, Tt
5
If T=tall for plant height and t=short, then the probability for short offspring is:
0%
100%
50%
25%
6
DNA is stored in what cell organelle?
ribosome
Golgi complex
cytoplasm
nucleus
7
The "handrails" or sides of the DNA ladder are made of:
alternating sugars and phosphates
hydrogen bonds
histone proteins
nitrogen bases
8
The different forms that a gene can have for a trait are called:
alleles
genotypes
phenotypes
chromosomes
9
The gene that always shows up or masks the other gene IF it is present in the gene pair is:
hybrid
purebred
dominant
recessive
10
Proteins are made in the cell on the:
ER
nucleus
Golgi complex
ribosomes
11
The physical appearance of a trait, shown with words, is the:
homozygous condition
heterozygous condition
phenotype
genetic makeup
12
The chromosomes in the nucleus of a cell contain a code known as:
RNA
DNA
mitosis
meiosis
13
The passing of traits from parents to offspring is called?
heredity
probability
meiosis
recessive
14
The Punnett square shows a blended phenotype which occurs with:
incomplete dominance
multiple alleles
polygenic inheritance
inadequate dominance
15
In a DNA molecule, which of the following bases pair together?
adenine-serosine
adenine-guanine
cytosine-thymine
cytosine-guanine
16
The mathematical chance that something would happen is called:
probability
statistics
geometry
calculus
17
A synonym for heterozygous is:
hybrid
dominant
purebred
recessive
18
The process that produces sex cells is called:
fertilization
meiosis
binary fission
mitosis
19
The gene that only shows up if there are two of them in the gene pair is:
homozygous
hybrid
recessive
dominant
20
The dominant trait in a genotype is shown with:
an exclamation point
an exponent
a capital letter
a lower case letter
21
The inside of the DNA strand, also called the "rungs" of the ladder, is made of:
nitrogen bases
sugars
phosphates
hydrogen bonds
22
Who is the known as "the Father of Genetics"?
Francis Crick
James Watson
Gregor Mendel
Albert Einstein
23
The form of asexual division used by humans that produces cells identical to the original cell:
mitosis
fission
regeneration
meiosis
24
The % probability of having white flowers in the following Punnett square cross is:
0%
25%
75%
50%
25
If a cat, heterozygous for long fur, is mated with a cat with the same genotype-Offspring?
25% long, 75% short
50% long, 50%short
100% long fur
75% long, 25% short