Meiosis
Random
Dihybrid Punnett Square
100
What happens during Meiosis I?
Homologous chromosomes separate into two different cells
100
What happens before meiosis occurs (pre-meiosis)?
DNA replicates
100
recessive traits are represented by
lower case letters
200
Which of these events occur during Meiosis II?
a. DNA replicates
b. Homologous chromosomes separate into two cells
c. Replicated chromosomes are separated into sister chromatids and segregated into daughter cells
c. Replicated chromosomes are separated into sister chromatids and segregated into daughter cells
200
What is the difference between the parent cell (pre-meiosis) and one of the four daughter cells?
The daughter cells have half as much genetic information as the parent cell; one copy of each chromosome instead of a pair of each chromosome.
200
Dominant traits are represented by
capital letters
300
During which phase of meiosis can homologous chromosomes exchange some genetic information?
Meiosis I
300
True or False:
If two white flowers were crossed enough times, a purple flower would appear. Assume mutations will not occur.
FALSE
300
aaBB
400
At what stage in meiosis would you consider the cells undergoing meiosis haploid cells?
After Meiosis I
400
What law did Mendel propose that describes how a parent's heritable characteristics separate during reproduction and go into different gametes?
a.
Law of Heredity
b.
Law of Segregation
c.
Law of Independent Assortment
d.
Law of Dominance
Law of Segregation
400
Red fruit (Y) is dominant to yellow fruit (y). Round fruit (P) is dominant to pear-shaped fruit (p). Cross a heterozygous red, round plant with another plant of the same genotype.
What fraction of the offspring should be red?
12/16 or 3/4
500
What happens during Anaphase 1?
Chromosomes move to opposite poles of the cell
500
homozygous
Having two identical (same) alleles on a gene for a given trait or characteristic. (purebred)
500
Red fruit (Y) is dominant to yellow fruit (y). Round fruit (P) is dominant to pear-shaped fruit (p). Cross a heterozygous red, round plant with another plant of the same genotype.
What is the probability of getting homozygous red and round fruit in the offspring?
1/16