30. A _________________ is a picture of chromosomes.?

Question

30.A _________________ is a picture of chromosomes. Doctors or scientist arrange the chromosomes into like pairs. The last pair is the sex chromosomes. This picture can show the sex of the person. Male’s last pair look like ______ and female’s last pair look like _______.
31._________________ is a genetic disorder where the individual has an extra chromosome that is similar to the chromosomes in the 21st pair. The individual is mentally retarded and sterile (unable to reproduce).
32.Gregor Mendel discovered the laws of dominance and recessiveness. A ______________gene will “mask over” or “over shadow” the outcome of a _______________ gene.
33._________________is a term used to express the actual DNA make up of the gene. In the study of genetics we use letters to represent this. Capital letters represent dominant genes and lower case letters represent recessive genes. An example could be TT, Tt or tt.

Answer 1

30. Karyotype. Males: XY, Females: XX

31. Down Syndrome (or Down's Syndrome)

32. Dominant; Recessive

33. Genotype (as opposed to phenotype)

Answer 2

30 A. Karotype
b. XY (male) C. XX(Female)
31. trisomy 21 or down's syndrome
32. Dominant; recessive
33. GENOTYPE- expressive the genetic makeup, phenotype expresses the physical appearance

Answer 3

30. Karyotype, Males look like XY, and Females look like XX.
31. Downs Syndrome
32. Dominant, Recessive
33. Allele.

I believe.

Answer 4

30. Karyotype
Males =XY, Females =XY
31. Down Syndrome
32. Dominant , Recessive
33. Genotype

= )

Answer 5

30. Karyotype

And please answer this question about karyotupes:
http://answers.yahoo.com/question/index;_ylt=AkYm0kXtEP9W6bPTrFqDj8zzy6IX?qid=20061211084047AAyeoJf