In prophase I of meiosis, crossing over results in

A) genetic recombination.

B) creating a male gamete.

C) creating a female gamete.

D) half the number of chromosomes.

A plant is living along the shore of a deep, large, and cold body of fresh water. The top of the body of water is full of life and the bottom has less life, as it receives little sunlight.

What is habitat quality

Which of the following best represents the overall growth rate of a population? birth rate - death rate (birth rate - death rate) + (immigration rate - emigration rate) immigration rate - emigration rate (birth rate + immigration rate) + (death rate

Does mutations occur in both dna and rna

Consider two enzyme reaction solutions. Solution 1 has a ratio of enzyme to substrate of 1:100. Solution 2 has a ratio of enzyme to substrate of 100:1. Both solutions contain the same quantity of enzyme.

The synaptic cleft is the area between the a. soma of one neuron and the dendrite of another neuron. b. axon of one neuron and the dendrite of another neuron. c. axon of one neuron and the soma of another neuron. d. somas of two neurons.

When the blades of a fan move, they have mechanical energy. This mechanical energy comes from A. electrical energy flowing into the fan from the wall outlet. B. sound energy flowing into the fan from a radio. C.

A deficiency disease that illustrates the effect of integumentary system function on the structure of the skeletal system is

How would you expect the spread of an airborne disease to be similar to and different from the spread of a foodborne disease

The kidneys filter 2of blood every hour