sex linked traits

Question 1

how many pairs of chromosomes do humans have?

Answer 1

23

Question 2

what is the female chromosome

Answer 2

XX

Question 3

male chromosones

Answer 3

XY

Question 4

X chromosones

Answer 4

contains genes for that code for all aspects of female sex development

Question 5

Y chromosones

Answer 5

much smaller then x and carries smaller number of genes

Question 6

what are most sex linked traits carried by

Answer 6

X chromosome

Question 7

carrier

Answer 7

a person that has one dominant and one recessive gene for a trait and only females with two x chromosomes can be carriers

Question 8

what is hemophilia

Answer 8

characterized by uncontrolled bleeding and is a sex link trait caused by errors in DNA that codes for protein include in blood clotting

Question 9

what is the only way females can show recessive traits

Answer 9

they must be homozygous recessive (meaning they have the same gene from both mom and dad)

Question 10

which sex is more likely to have a recessive trait

Answer 10

male because they only have one x chromosome

Question 11

heterozygus

Answer 11

two different alleles

Question 12

homozygous

Answer 12

two oof the same alleles

Question 13

alleles

Answer 13

Alleles are different forms of a gene

Question 14

genotype

Answer 14

genetic makeup of organisms (AA,Aa)

Question 15

pheonotype

Answer 15

physical trait that result from a genotype

Question 16

incomplete dominance

Answer 16

when the alleles aren’t completely dominant and they mix (blend)

Question 17

co-domanince

Answer 17

both alleles are fully expressed and show both traits (black with white dots)

Question 18

what does DNA code for

Answer 18

DNA codes for proteins

Question 19

autosomal

Answer 19

gene that is on one of the regular chromosomes