Meiosis
Genetics 1
Genetics 2
Genetics 3
Genetics 4
100
If a kangaroo's liver cell has 18 chromosomes, how many chromosomes are in a kangaroo's egg cell?
The liver cell is considered a what type of cell?
1. Eighth - Diploid vs Haploid
2. Somatic
100
Provide examples of Non-Mendelian Genetics:
Co-dominance, Incomplete Dominance, Polygenic Traits, and Multiple Alleles
100
The alleles from parents are passed on randomly to the offspring. After fertilization, the resulting zygote(s) can end up with any combination of chromosomes from the parents and all the possible combinations occur with equal frequency.
What law demonstrates this?
Law of Independent Assortment
100
The genotypes for type A blood
IA IA , IA i
100
Based on the picture below, describe what is happening:
Nondisjunction - Chromosomes fail to separate during Meiosis
200
Provide at least two key points of what sets Meiosis apart from Mitosis:
Meiosis has:
- two cycles
- leads to the formation of unique haploid cells
- deals with reproduction through the formation of gametes
200
What is another word for purebred?
homozygous
200
This occurs when egg and sperm join to make offspring. What do you call this diploid cell?
fertilization and zygote
200
This is an organism's genetic makeup.
Genotype
200
This is an organism's physical appearance.
Phenotype
300
In Meiosis, genetic variation occurs due to what event in a certain stage. What is that event called and what stage does it occur?
Homologous "Crossing Over" and this occurs in Prophase I
300
An organism with 2 different alleles for a trait is called a ______.
Hybrid/heterozygous
300
What law demonstrates a pair of alleles separating from each other during meiosis cell division (gamete formation) so that only one allele will be present in each gamete?
Law of Segregation
300
This type of organism has 2 different alleles for a trait
Heterozygous
300
What happens when a recessive allele is paired up with a dominant allele?
It is hidden / doesn't show up
400
How is a stomach cell and egg cell different from each other? Explain and Elaborate.
The stomach cell is considered to be a diploid and is synthesized through Mitosis.
The egg cell is considered to be a haploid and is synthesized through Meiosis.
400
This type of organism has 2 dominant alleles for a trait.
Homozygous dominant
400
If a homozygous dominant red flower (RR) and a homozygous white flower (rr) are crossed, what is the genotypic ratios of the offspring?
100% heterozygous (Rr)
400
Blood type where neither trait is dominant over the other and the two blend together. What type of Non-Mendelian Genetics is this?
Type AB Blood, Co-dominance
400
Based on the karyotype below, what is the gender of the individual below and determine the disorder this individual has? Explain and elaborate
This individual is considered to be male (XY).
This person is diagnosed with Klinefelter's syndrome. Extra X chromosome.
500
What are the end products of Meiosis and Mitosis?
Mitosis - Two duplicated diploid daughter cells
Meiosis - Four Haploid daughter cells
500
In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur.
The female dog is heterozygous. The male dog is homozygous recessive. Figure out the percentage or ratio of possible phenotypes and genotypes of their puppies by using a Punnett Square:
Genotypes: 50% Ff
50% ff
Phenotype: 50% Grey Allele
50% Black Allele
500
Different forms of a gene.
alleles
500
Bob has type A while Susie has type B. Bob and Susie have 2 daughters: one daughter has type A while the other daughter has type O.
A) Draw a Punnett Square of the Blood types of the parents.
B) List the phenotypic and genotypic percentages.
A)
B) 25% Type AB
25% Type A
25% Type B
25% Type O
500
Attach is a karyotype of a certain individual. Based on the picture provided, what is the gender of the individual and thee type of disorder this person has? Please explain and elaborate.
1. XX Chromosome, female
2. Person has down syndrome
3. Abnormality in Chromosomes #21 (three instead of two)