Meiosis and intro to Genetics Quiz
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Is it possible for a female to express a Y-Linked trait, and why or why not?
A. Yes, Because they have room on their X Chromosome for it
B. Yes, Because they can take it from the father
C. No, Because the copy on their X Chromosome will overpower the copy on their Y chromosome
D. No, Because they lack a Y chromosome
Colorblindness is a sex-linked recessive disorder. A normal woman whose father was colorblind marries a man with normal color vision. What percentage of their sons will be colorblind?
A. 0%
B. 25%
C. 50%
D. 100%
Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?
A. The same number
B. One-fourth as many
C. Twice as many
D. Half as many
What specifically about Pea Plants did Mendel Study?
A. Color of Pea Flower
B. Colors of individual Peas
C. Texture of Peas
D. All of these
Who is Gregor Mendel
A. an Austrian Monk from the mid 1800s who contributed to the study of Genetics
B. The scientist who discovered the structure of DNA
C. a British scientist who discovered penicillin
D. The scientist who used X-Ray Crystallography to shed light on the structure of DNA
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
A. 20
B. 40
C. 80
D. 160
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
A. 0%
B. 25%
C. 50%
D. 75%
What was Mendel’s first conclusion?
A. Pea plants were inheriting a pair of genetic instructions from both parents.
B. Pea plants were inheriting genetic instructions from their grandparents.
C. Pea plants were inheriting genetic instructions only from their maternal parent.
D. Pea plants were inheriting genetic instructions only from their paternal parent
What did Mendel call the two kinds of traits exhibited by the pea plants (one coming from the father, one from the mother)?
A. Genesis
B. Elective traits
C. Alleles
D. Quadrants
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
A. 0 in 4
B. 1 in 4
C. 2 in 4
D. 4 in 4
Gregor Mendel’s parent generations (P) were True Breeding. This means that they were…
A. homozygous for the allele matching their Phenotype
B. heterozygous for the allele matching their Phenotype
What do we call the result of the genotype (for example, the color of the peas)?
A. Visible traits
B. Physiotrait
C. Genotype 2
D. Phenotype
What is it called when a sperm and egg meet?
A. meiosis
B. fertilization
C. cell division
D. mitosis
Females have ____ and males have _____ chromosomes.
A. XX, XY
B. XY, XX
C. XX, XX
D. XY, XY
What is one reason why we need meiosis?
A. To double the number of chromosomes going into sex cells
B. To halve the number of chromosomes going into sex cells
C. To triple the number of chromosomes going into sex cells
D. To not change the number of chromosomes going into sex cells
What did Gregor Mendel study?
A. Mold Spores
B. Pea Plants
C. Sun Flowers
D. Rats
If B = brown hair and b = blonde hair, what is the probability of brown hair?
A. 25%
B. 50%
C. 0%
D. 75%
Why were pea plants perfect a study on Heredity?
A. Pea plants were easy to care for and produced many offspring
B. The Traits were distinct and easy to identify
C. One gene controlled one trait. (i.e. it was simple)
D. All of These
What is the probability of heterozygous offspring?
A. 25%
B. 50%
C. 0%
D. 100%
This type of phenotype is less likely to be prominent in offspring
A. Dominant genotype
B. Recessive genotype
C. Dominant phenotype
D. Recessive phenotype
What kind of genotype has 2 recessive alleles
A. homozygous dominant
B. heterozygous
C. homozygous recessive
D. heterozygous recessive
which choice best represents the genotype of this cross?
A. 1 Yy: 2 yy: 0 YY
B. 2 Yy: 2 yy: 0 YY
C. 3 Yy: 1 yy: 0 YY
D. 1 Yy: 3 yy: 0 YY
Hemophilia is a recessive x-linked disorder.
Which genotype represents afemale who is a carrier for hemophilia?
Which of the following genotypes is homozygous dominant?
A. A
B. Aa
C. AA
D. aa
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
A. 50 % Brown Hair and 50% Blond Hair
B. 25 % Brown Hair and 75% Blond Hair
C. 75 % Brown Hair and 25% Blond Hair
D. 0% Brown Hair and 100% Blond Hair
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