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Chromosomes Norwin Gr 9
Norwin Grade 9 Biology Chromosomes Genetics
27
Biology
9th Grade
04/07/2013

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Term
complete set of genetic information an organism carries in its DNA
Definition
genome
Term
a photograph of cells in mitosis
Definition
a keryotype is made up
Term
the number of chromosomes in a normal human karyotype
Definition
46
Term
male human
Definition
46, XY
Term
the ratio of male to female births is 50/50
Definition
half of all sperm carry a Y chromosome
Term
how X and Y chromosomes are different
Definition
Y has fewer genes
Term
all human cells carry
Definition
at least one X chromosome
Term
complete dominance
Definition
one dominant allele and one recessive allele
Term
heterozygetes genotype results in dominate phenotype
Definition
complete dominance
Term
exaple of complete dominance
Definition
tongue rolling
Term
codominate and multiple allels
Definition
trait has 2 more than 2 possible alleles
Term
2 alleles may be expressed equally
Definition
codominate and multiple alleles
Term
example of codominate and multiple alleles
Definition
Blood type Ia Ib - Type AB
Term
Sex linked
Definition
genes that are located on the x chromosome
Term
females receive 2 allels while males get 1
Definition
sex linked
Term
is sex linked traits higher in males or females
Definition
males
Term
examples of sex linked trait
Definition
color blindness
Term
hemophelia
Definition
sex linked trait
Term
polygenic inheritance
Definition
skin coor
Term
height
Definition
polygenetic inheritance
Term
multiple alleles
Definition
blood type
Term
tongue rolling
Definition
autosomal dominant
Term
sex-influenced trait
Definition
baldness
Term
incomplete dominance
Definition
wavy hair
Term
why men are bald
Definition
heterozygous genetypes result in different phenotypes in men
Term
define sex linked trait
Definition
found on XY chromosomes
Term
define sex influenced trait
Definition
works different for hetergyotes
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