GENETICS 1.0
An organism with two different alleles (Aa) is ____________________.
heterozygous
A diploid cell contains ______________________ sets of chromosomes.
2
Males are represented by____________
females are represented by ___________
square; circle
An organism with two of the same alleles (HH/hh)
homozygous
A haploid cell contains ______________________ set of chromosomes.
1
Traits that affect males more are
X-linked recessive
In an organism, if a _____________ letter is present that is the trait that will show.
capital
If an organism has a diploid number (2n) of 38, its haploid gametes (n) would have __________ chromosomes.
19
The Roman numerals on a pedigree represent
generations
in pigeons, the allele for normal feathers is dominant to the allele for frizzy feathers.
If a purebred, normal feathered pigeon and a frizzy feathered bird are crossed, how many different phenotypes are possible in the offspring?
1
Homologous chromosomes have same ___________ but different ___________
genes; alleles
Is the drawing on the board recessive or dominant?
recessive
If a woman who is homozygous dominant (WW) for widow’s peak (a dominant trait) has a child with a man who is homozygous recessive (ww), will their child have a widow’s peak?
Yes, their child will definitely have a widow’s peak, since all their offspring would be heterozygous for widow’s peak.
In meiosis, the cell divides _________ and creates ____________ genetically unique cells
twice; four
assign the correct genotypes to the pedigree on the board
on board