Question

which term describes a type of trait that is usually expressed only when an organism has 2 identical alleles for the trait?

A. heterozygous <<<<
B. dominant
C. homozygous <<<<
D. recessive

im stuck between these 2.

Answer 1

@Thadds2003

Answer 2

ok.......

Answer 3

The answer is B.

Answer 4

thx...i have one more

Answer 5

ok

Answer 6

the correct answer is recessive

Answer 7

Thats what i said

Answer 8

A recessive trait is only expressed when you have two identical copies of it, otherwise it is masked by the other trait

Answer 9

oops i acidentaly put b, its d, sorry.

Answer 10

@Thadds2003 u said B) Dominant

Answer 11

i just said that i acidentally put b

Answer 12

ok

Answer 13

a certain species of grasshopper can have red stripes, yellow stripes, or red and yellow stripes. An RR grasshopper has red stripes, an YY grasshoper has yellow stripes, and an RY grasshopper has red and yellow stripes.

a grasshopper with red stripes mates with a grasshopper with yelow stripes. What ratio would you expect to see in the phenotypes of their offspring?

A. 1 with red stripes: 2 with red and yellow stripes: 1 with yellow stripes
B. all with yellow and red stripes
C. all with red stripes
D. 2 with red stripes: 2 with yellow stripes

p.s. i changed my first answer (the first question) :) thx

Answer 14

ok..........

Answer 15

@fernanda1022

Answer 16

sounds like codominance to me

Answer 17

They display codominance. Incomplete dominance is similar but where they two alleles are blended, as if u were to have orange stripes. The other two are completely wrong.

Answer 18

can i get medal?????

Answer 19

im confused....which would the answer be?

Answer 20

If red is the dominant trait, then there are two possible answers (A and B). Because the red grasshopper can be RR or Rr, where R is the red gene and r is the yellow gene.
The yellow grasshopper would then be rr

Then the Punnet squares work out such that A is the correct choice if the red grasshopper has RR, and B is correct choice is the red grasshopper is Rr.

But if red is not dominant over yellow (I think the term is codominant), then the correct answer is D, since red grasshopper would have to be RR and yellow would be rr, and all the offspring would be Rr.

Since A and C can both be right if there is dominance, I would assume there is codominance and go with answer B

Answer 21

b

Answer 22

wow, just at the same time.

Answer 23

any more questions?

Answer 24

kewl thx guys

Answer 25

nope that it for today

Answer 26

ight bye

Answer 27

ok see ya.

Answer 28

what grade you're in?

Answer 29

9th

Answer 30

me?

Answer 31

i in 7th grade

Answer 32

oh i'm a sophomore

Answer 33

i feel very smart helping a 9th grader.....

Answer 34

lmfao