SEX CHROMOSOMES

Question 1

Sex is determined by chromosomes

Answer 1

females possess two identical sex
chromosomes(X chromosome) and male
possess single X and single Y

Question 2

Birds, butterflies, and some reptiles, sex is
still ______ , but it is the male that
possess ____ identical sex
chromosomes(called Z chromosomes) and
the female that has two ______ sex
chromosomes(Z and W)

Answer 2

chromosomal
two
different

Question 3

Some animals for which sex is not
determined by sex chromosomes at all but
are primarily a function of the environment
such as in turtles and alligators, sex is
influenced by the ______ at which the
eggs are incubated with male produced at 1
temperature and female at another.

Answer 3

temperature

Question 4

_________ is the formation of
offspring that are genetically distinct from
their parents
Most of the two parents contribute genes to
their offspring, and those genes are
assorted to new combinations through
meiosis.

Answer 4

Sexual reproduction

Question 5

Among most eukaryotes, sexual
reproduction consists of two processes that
lead to an alternation of haploid and diploid
cells: ______ produces haploid gametes
(spores in plants), and _____ produces
diploid zygotes

Answer 5

meiosis
fertilization

Question 6

sex refers to sexual ________.

Answer 6

phenotype

Question 7

The mechanism by which biological
sex established is termed _______

Answer 7

sex determination

Question 8

We define sex of an individual organism in
reference to its phenotype, most organisms
have two sexual phenotypes - _____ and
_______.

Answer 8

male
female

Question 9

The fundamental difference between male
and female is the gamete size. The male
produces ____ gametes, the female
produces________ gametes.

Answer 9

small
larger

Question 10

_____ is not the same as sex

Answer 10

Gender

Question 11

Biologically, sex refers to ______ and
______phenotype of an individual

Answer 11

anatomic
physiological

Question 12

gender is a category
assigned by an individual or others based on their ________and _______

Answer 12

behavior
cultural practices

Question 13

One’s gender need not coincide with one’s
_________

Answer 13

biological sex

Question 14

both sexes are present in the same
organism, a condition termed
__________

Answer 14

hermaphroditism

Question 15

Organisms that bear both male and female
reproductive structures are said to be ______ (meaning “one house”).

Answer 15

monoecious

Question 16

Species in which an individual organism
has either male or female reproductive
structures are said to be _______ (“two
houses”).

Answer 16

dioecious

Question 17

Humans are considered to be ________,
among dioecious species, sex may be
determined chromosomally, genetically or
environmentally.

Answer 17

dioecious