Sex Determination & Sex Chromosomes 4

Question 1

Sex differences depends on the presence of ______________

Answer 1

Sex chromosomes

Question 2

_______________ determine a sex in a specie so determines if your a male or female

Answer 2

Sex chromsomes

Question 3

For humans females have two ______ chromosomes so they are homogametic sex & males have an _________ chromosomes so they are heterogametic sex

Answer 3

Have two XX chromosome, X&Y chromosome

Question 4

In the male there are two types of sperm produce one that carries the X chromosome and one that carries the Y chromosome so therefor the male _______________

Answer 4

Determines the gender (sex)

Question 5

Humans have 22 pairs of ___________ & one pair of sex chromosomes

Answer 5

Autosomes

Question 6

Autosomes

Answer 6

Chromosomes that are not sex chromosomes

Question 7

The ______ gene on the Y chromosome causes a person to be a male

Answer 7

SRY

Question 8

Hemizygous

Answer 8

Describes the single copy of an X-linked gene (A gene on an X chromosome) in the male

Question 9

Males are consider ___________ for X-linked genes because they have only one X chromosome

Answer 9

Hemizygous

Question 10

Wild type trait

Answer 10

Trait that a whole population has so its common

Question 11

X-linked genes (or X-linked alleles) are only genes on the _____ chromosome

Answer 11

X chromosome

Question 12

In an X-linked inhertiance the _____ chromosome has no allele & is not involved in the X-linked inheritance its just states that its a boy

Answer 12

Y -Chromosome

Question 13

What does it mean when result is sex bias?

Answer 13

Means that only a certain gender has the mutant allele (ex. only males are white eye in fruit flies)

Question 14

What does it mean when results are not sex bias?

Answer 14

Means that both sex have mutant alleles (ex. both male & female fruit flies are white eye)

Question 15

X-linked inheritance

Answer 15

Genes or alleles on the X-chromosome determines the phenotype (trait) of the organism

Question 16

X-linked recessive

Answer 16

An allele that is recessive on the x chromosome

Question 17

X-linked dominant

Answer 17

An allele that is dominant on the X chromosome