Meiosis and intro to Genetics Quiz
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What percentage of the female offspring will be a carrier for this recessive disease?
A. 0%
B. 50%
C. 100%
D. 25%
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%
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
A. recessive
B. dominant
C. lower case letter
D. both
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
Females have ____ and males have _____ chromosomes.
A. XX, XY
B. XY, XX
C. XX, XX
D. XY, XY
When we say that a woman is a carrier for a genetic disease or disorder it means that
A. she has 1 gene, but not the disorder
B. she has 2 genes for the disorder
C. she can pass the gene only to male children
D. she can pass the gene only to female children
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
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
Heterozygous is when…
A. the alleles are the same
B. the alleles are different
C. the alleles are absent
D. the alleles are present
What is it called when a sperm and egg meet?
A. meiosis
B. fertilization
C. cell division
D. mitosis
Mendel’s Law of Segregation means?
A. Every person has two alleles for each trait, they segregate from each other and the dominant is passed more often.
B. Every person has two alleles for each trait, Where two traits are being passed, they do not effect each other.
C. Every person has two alleles for each trait, they segregate from each other and are passed down at random.
D. Every person has two alleles for each trait, they segregate from each other and the recessive is passed more often.
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 is the probability of heterozygous offspring?
A. 25%
B. 50%
C. 0%
D. 100%
Which of the following is NOT a genotype?
A. heterozygous
B. a trait
C. Bb
D. homozygous recessive
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 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
If a trait shows up more commonly in men than women it is probably
A. not inherited
B. on the x chromosome and dominant
C. on the x chromosome and recessive
D. on a normal body chromosome
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
What allele combination should go in the missing box?
A. AA
B. Aa
C. aa
D. none of these
A human being has a somatic cell that has 46 chromosomes. What is the haploid number found in a gamete?
A. 23
B. 46
C. 69
D. 92
What kind of genotype has 2 recessive alleles
A. homozygous dominant
B. heterozygous
C. homozygous recessive
D. heterozygous recessive
The sex of a child is determined by
A. whether the father’s sperm contains an x or y chromosome
B. whether the mother’s egg contains an x or y chromosome
C. the age of the parents
Hemophilia is a recessive x-linked disorder.
Which genotype represents afemale who is a carrier for hemophilia?
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 causes genetic variation in meiosis?
A. chromosomes lining up
B. crossing over of chromosomes
C. separation of chromosomes
D. chromosomes pulling apart
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