Transcript Chapter 11 Review PPT

Gametes are produced by the
process of
meiosis.
A breed of chicken shows
incomplete dominance for feather
color. One allele codes for black
feathers, another codes for white
feathers. The feathers of
heterozygous chickens of this
breed will be
Gray.
In rabbits, there are four
different versions of the gene
for coat color. What pattern of
inheritance is this?
multiple alleles.
When Gregor Mendel crossed
a tall plant with a short plant,
the F1 plants inherited ___
allele from each parent.
one
If an organism’s diploid
number is 46, its haploid
number is
23
What are the only kinds of
cells that undergo meiosis?
sex cells, gametes
This diagram shows
incomplete dominance
When you flip a coin, what is
the probability that it will
come up tails?
50%
What is the probability that a
cross between parents who are
both homozygous recessive for
trait will have offspring that
are homozygous recessive for
that trait?
100%
Variation in human skin color
is an example of
polygenic traits.
Organisms that have two
different alleles for a particular
trait are said to be
heterozygous.
Which of the following supports
the claim that the environment can
affect genetic traits?
a.
b.
c.
d.
Pinion trees bear cones every other year.
Dandelion plants are self pollinating.
Oak trees get taller as they grow.
Hydrangea flower color varies with soil pH.
Hydrangea flower color varies with soil pH.
Unlike mitosis,
_________results in the
formation of haploid cells.
meiosis
A breed of chicken shows
codominance for feather color.
One allele codes for black
feathers, another codes for white
feathers. The feathers of
heterozygous chickens of this
breed will be
speckled.
Chromosomes form tetrads
during __________ of meiosis.
prophase I
If two genes are on the same
chromosome and rarely assort
independently, the genes are
probably located _____
close to each other.
Or
far apart from each other
close to each other.
The different forms of a gene
are called
alleles.
What principle states that
during gamete formation genes
for different traits separate
without influencing each
other’s inheritance?
principle of independent assortment
A male and female bison that are
both heterozygous for normal skin
pigmentation (Aa) produce an
albino offspring (aa). Which of
Mendel’s principles explain(s)
why the offspring is albino?
dominance and segregation
A tall plant (TT) is crossed
with a short plant (tt). If the tall
F1 pea plants are allowed to
self-pollinate, the offspring can
be
tall or short.
True or False
The farther apart two genes are
located on a chromosome, the
less likely they are to be
inherited together.
True
True or False
One way that meiosis I is different
from mitosis is that meiosis I
produces 2 haploid daughter cells,
but mitosis produces 2 diploid
daughter cells.
True
A _________ consists of a
homologous pair of
chromosomes, each made of
two chromatids.
tetrad
four genetically different cells
are is formed at the end of
__________
meiosis
A heterozygous tall pea plant is
crossed with a short plant. The
probability that an F1 plant
will be tall is
50%.
True or False
Gregor Mendel’s principles of
genetics apply to pea plants
only.
(False) all organisms
The number of chromosomes
in a gamete is represented by
the symbol
N
Situations in which one allele
for a gene is not completely
dominant over another allele
for that gene are called
incomplete dominance.
Mitosis results in two cells,
whereas meiosis results in
_____ cell.
four
Organisms that have two
identical alleles for a particular
trait are said to be
homozygous.
The probability that a gamete
produced by a pea plant
heterozygous for stem height
(Tt) will contain the recessive
allele is _____%
50%
Roan cattle show codominance for
the color of their hair. There are
alleles for red hair and white hair.
What would you expect a
heterozygous roan bull to look
like if the trait showed incomplete
dominance instead?
It would be pink.
An organism has 24 chromosomes
in a body cell. After mitosis each
cell has 24 chromosomes. After
meiosis each gamete has
____________________
chromosomes.
12
What is being shown
Crossing-over