Biology Answers

What mutations are produced by ionizing and UV Radiation?

When round and yellow seeded pea plants (YYRR) are crossed with green wrinkled

(y y r r) seeded pea plants the F1 are yellow and round seeded plants (Yy Rr).

What will be the results when this F1 is crossed with round and yellow seeded parents? 

In a mating between two individuals that are heterozygous for a recessive lethal allele

that is expressed in utero, what genotypic ratio (homozygous dominant: heterozygous:

homozygous recessive) would you expect to observe in the offspring?

Imagine you are performing a cross involving garden pea plants. What F1, F2 offspring

would you expect if you cross true-breeding parents with green seeds and yellow

seeds? Yellow seed color is dominant over green.

What will be the appearance of (a) F1 and (b) F2 progenies when a pure (homozygous)

tall pea plant is crossed with a pure (homozygous) dwarf pea plant?

What observations led Mendel to conclude that traits were inherited as particles from

each parent?

Discuss the role the following pieces of evidence played in the making of chromosomal

theory of heredity:

a) The discovery of the white fly.

b) The microscopic evidence for chromosome pair crossing over.

c) The coupling factors on the Drosophila X chromosome.

Explain the effect of the parasympathetic division of the autonomic nervous system on cardiac output

With meiosis, it focus on the division of gametes or the sex cells, with this idea, what core value can you get from it?is it faith? is it excellence? or service? What core value? And why?

Describe the importance of selectively permeable membranes and compare the

functions of carrier proteins and channel proteins.