Life and the Natural World Exam 2

Study guide over Labs 5,6, and 7 of Life and the Natural World

How many pairs of chromosomes do humans normally have?

23(46 total)

What are different versions of genes called?

alleles

What is the term used for two copies of the same allele?

Homozygous

What is the term used for two alleles that are different?

Heterozygous

How was ending percent of worms in the natural selection calculated?

Number of black worms divided by total number of worms remaining at the end

T/F: Each Chromosome contains the same genes

False

In Lab 5, what did we use to extract our DNA from our cheek cells

Tooth Pick

How can we separate different sizes of DNA molecules?

Electrophoresis

How can we determine the probability of our genotype?

By measuring distance traveled by the marker bands and determining the band size and then comparing them to the D1S80 VNTR locus allele frequencies

What was determined by the Natural Selection Lab?

Some traits are more valuable for survival than others

What type of pollinator would a plant with bright colors, fragrance, and colors of blue purple or yellow attract?

Bees

What type of pollinator would a plant with white or light colors, hanging down bowl shaped petals, and a musty or fermenting odor attract?

Bats

What pollinator would a plant with orange, yellow, blue or red colors, tubular shape, and sweet smells attract?

Butterflies

What type of pollinator would a plant with bright colors typically of red and yellows, medium size, tubular, hanging down petals and no smell attract?

Hummingbirds

What type of pollinator would a plant with a fruity, spicy or fermentation smell, round with white or dull colors, and flat broad, landing platform petals attract?

Beetles

What pollinator would a plant with dull colors and rotten, sweaty, or feces like odors attract?

Flies

What Pollinator would a plant with white petals, tubular shape, and strong sweet odors attract?

Moths

What plants attract organisms like wasps, bees, butterflies, and gnats with petals that look like the pollinator species in terms of shape, coloring and other markings?

Sexual Deceptors

What type of pollinators do plants with very small sepals and petals, no odors, and large and feathery stigmas get pollinated by

Wind

What type of pollinator do plants with flush flowers to its surface with pollen released on the pollinator have?

Water