Meiosis
___ cells are 2n as ___ cells are 1n
diploid and haploid
dihybrid
___ are squares and ___ are circles
men are squares and woman are circles
How many chromosomes does a human have?
46 and 23 pairs
There are two ways type A and type B blood can be written. What are those two ways? (will have four different variations all together)
I^A I^A or I^A i
I^B I^B or I^B i
After Telophase 2 in Meiosis, what are we left with?
4 haploid cells
In a cross between a homozygous dominant (AA) and a homozygous recessive (aa), what percentage of the offspring will display the dominant phenotype?
100%
What is a carrier?
Someone who has has the gene for the trait but does not present the trait itself.
Which one of these is a autosomal DOMINANT disorder?
Huntington's disease
What type of dominance are blood types A and B
Codominance: to produce Type AB
When does crossing over happen?
Prophase 1
Having long hair is dominant and short hair is recessive. If a heterozygous dominant man marries a woman with short hair, what is the percentage for their kids to have short hair?
50%
Colorblindess and hemophillia are _ linked traits.
X linked
What is Klinefelter's syndrome?
male with two Y chromosomes and one Y chromosomes (XXY), subtle symptoms, often experience speech and language delays, require assisted reproduction to have children
If a woman with heterozygous type A blood marries a man with heterozygous type B blood, what is the likelihood for their child to have type O blood?
25%
What is the law of Independent Assortment?
genes for different traits are passed on independently
A heterozygous man marries a woman. Their genotypic ratio ( if they have kids) is 2: homozygous dominant and 2 Heterozygous traits. What is the genotype of the woman?
Homozygous dominant FF
If a black shaded square for colorblindess is crossed with a nonshaded, normal circle. Would their son have the disorder and if so, what is their genotype?Colorblindess and hemophillia are _ linked traits.
No and X^H Y.
If a woman has albinism and a man is normal, what is the probability percentage for their child to have a boy who has albinism?
100%
If a man with type AB blood crosses with a woman with homozygous type B blood, what is percentage for the child to have type B blood?
50%
the period of time between meiosis 1 and meiosis 2 that separates cytoplasm is known as
interkinesis
Blue color (B) is dominant to white color (b) and long petals (A) is dominant to short petals (a). If two heterozygous blue and heterozygous long petalled flowers are crossed, what is the fraction for the offspring to have white and short petals?
1/16
If a man and a woman have a daughter who is homozygous recessive for colorblindness. Would the parents have also colorblindness or not? Explain your thinking.
Yes, because the daughter must get two X recessive chromosomes from both parents.
What is Nondisjunction?
failure of homologous chromosomes during meiosis 1 or sister chromatids (during meiosis 2) to separate correctly during meiosis
If a Man with type AB blood crosses with a woman with homozygous type B blood, what percentage of their offspring will be type O?
0%