A cross between two individuals who differ with respect to two gene pairs is a

____________________ cross. Fill in the blank(s) with the appropriate word(s).


ANS: dihybrid

Biology & Microbiology

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Potential energy is the energy of which of the following?

a. position b. motion c. chemical bonds d. light

Biology & Microbiology

All of the following are adaptations against excessive water and salt exchange between animals and their surrounding environment except:

a. having very permeable tissues. b. covering body with mucus. c. living inside a tube that can be isolated from the external environment. d. covering the body with a hard exoskeleton. e. actively absorbing salt ions with gills.

Biology & Microbiology

One difference between a gene mutation and a chromosomal mutation is that

a. A gene mutation affects the DNA of more genes than a chromosomal mutation b. A gene mutation can involve a insertion or deletion, but cannot result in a frameshift c. A chromosomal mutation can change the number of chromosomes in a cell d. A chromosomal mutation is more likely to be passed on to offspring or daughter cells

Biology & Microbiology

When the levels of estrogen in the blood are low, estrogen acts as a _______ regulator.

Fill in the blank(s) with correct word

Biology & Microbiology