Download Genetics Unit Test Review

Genetics Unit Test Review
Define the following terms by using your standard’s packet. If you cannot find your packet,
there are plenty of extras in the extras tray on the front table. These are in order by standard
1. meiosis
2. diploid
3. haploid
4. Law of Independent Assortment
5. Law of Segregation
6. genotype
7. phenotype
8. homozygous
9. heterozygous
10.sex chromosomes
11.autosomes
12.pedigree
13.sex-linked traits
14.Down Syndrome (causes)
15.nondisjuction
16.codominant
17.incomplete dominant
18.mutation
19.chromosomal mutations
20.cloning
21.genome
22.gene therapy
23.genetic engineering
24.inbreeding
25.stem cells
26.hybridization
Complete the following pedigree chart.
1
3
4
2
5
9
1.
2.
3.
4.
5.
6.
7.
6
10
7
11
8
12
8.
9.
10.
11.
12.
Complete the following dihybrid crosses.
1. Bronze turkeys have at least one dominant allele B. Red turkeys are homozygous
recessive (b). Another dominant gene H produces normal feathers, and the recessive
allele (h) produces “hairy” feathers.
Cross a heterozygous bronze, hairy feathered bird with a red, heterozygous normal
feathered bird and provide the genotype and phenotype.
2. In humans, attached ear lobes is recessive to free ear lobes. Widow’s peak is dominant to
a straight hairline. Using any letters you wish, cross the following parents and show the
genotype and phenotype of the offspring.
Homozygous free ear lobes, straight hairline X attached ear lobes, heterozygous widow’s
peak
3. In horses, black coloration is dominant to chestnut colored hair. Also, trotting is due to a
dominant gene and pacing is a recessive gene. Using any letters you wish, cross the
following parents and show the genotype and phenotype of the offspring.
Heterozygous black, heterozygous trotting X homozygous black, pacing
Below you will see karyotypes (pictures of human chromosomes) of several different
people. Your task is to identify which one goes with the following:
**normal female
**normal male
**klinefelter’s male
**Turner’s Syndrome female
**Down Syndrome
What causes these abnormal numbers of
chromosomes in a human? Name and explain
the process in the space below.