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When doing a genetic cross why is it necessary to remove the parent flies before the pupae have hatched?
Usually, the parent flies will have a different genotype to the F1 generation (their offspring). For example, if the parents had WW (black eyes) and ww (white eyes), their offspring would all have Ww (black eyes). If you were experimenting further, you would want the F1 generation to cross - with Ww X Ww. If you did not remove the parental generation, you could have crosses between them and the F1 generation, which would result in different genotypes. If the parents were not removed, you could have the following crosses: Ww X WW Ww X ww WW X ww Ww X Ww The only cross that you would desire in the experiment would be F1 X F1 (Ww X Ww), which would give you the desired genotypes for the F2 generation.
What is the ratio of a white snap dragon crossed with a pink snap dragon?
if you mean in terms of what their offspring will be? then you need to do a monohyrid cross, the gametes being RW and WW sooo x R W W RW WW W RW WW it will be 1:1 ratio of pink to white offspring
When Gregor Mendel crossed true breeding purple flowered plants with true breeding white flowered plants all the offspring were purple because?
PP X ww or Pw X ww Because all Purple flower plants are dominant and express the color purple. This can be seen in a homozygous cross, or a heterozygous cross, ( shown above ) White plants, to breed true, must be in homozygous condition.
What is a possible gamete for Ww?
The possible gametes produced by an individual with the genotype Ww will be W and w.
What is the result from a cross between the parents Ww and Ww?
The genotypes produced from a cross between Ww and Ww would be: WW Ww Ww ww -The cross between these two genotypes would produce gametes with genotypes in a 1:2:1 ratio.
In a certain cat long whiskers (W) are dominant and short whiskers (w) are recessive. Two cats have genotypes Ww and ww. If they have an offspring with short whiskers what is the genotype of their off?
ww
When doing a genetic cross why is it necessary to remove the parent flies before the pupae have hatched?
Usually, the parent flies will have a different genotype to the F1 generation (their offspring). For example, if the parents had WW (black eyes) and ww (white eyes), their offspring would all have Ww (black eyes). If you were experimenting further, you would want the F1 generation to cross - with Ww X Ww. If you did not remove the parental generation, you could have crosses between them and the F1 generation, which would result in different genotypes. If the parents were not removed, you could have the following crosses: Ww X WW Ww X ww WW X ww Ww X Ww The only cross that you would desire in the experiment would be F1 X F1 (Ww X Ww), which would give you the desired genotypes for the F2 generation.
Suppose you have two mice one black one white the genotype for the black mouse is WW and the genotype for the white mouse is ww What would the punnet square look like?
It would look like this. --¦ W W -------------- w¦ Ww Ww w¦ Ww Ww All the offspring would be black-furred, all carrying one dominant gene and one recessive.
What is the ratio of a white snap dragon crossed with a pink snap dragon?
if you mean in terms of what their offspring will be? then you need to do a monohyrid cross, the gametes being RW and WW sooo x R W W RW WW W RW WW it will be 1:1 ratio of pink to white offspring
Describe the offspring of a true breeding white flowering plant?
More true breeding white flowered plants. If the gene combination for white is WW and is dominant a cross of WW x WW would result in 100% WW (white flowered plants)
When Gregor Mendel crossed true breeding purple flowered plants with true breeding white flowered plants all the offspring were purple because?
PP X ww or Pw X ww Because all Purple flower plants are dominant and express the color purple. This can be seen in a homozygous cross, or a heterozygous cross, ( shown above ) White plants, to breed true, must be in homozygous condition.
Do all animals need to mate to have offspring?
No, not all animals need to mate to have offspring.
What colors will the offspring of a black cat carrying a white allele and a purebred white cat be?
There is no such thing as a "purebred" white cat. White and black are just colours, not breeds. For a start, there are two genes that can make a cat white: The usual being dominant and therefore cannot be carried by a black cat, and the recessive albino. My guess is we are only talking about the recessive allele, so we have a black cat carrying albino (Cc) and a pure albino (cc). In this case half the kittens would be white (cc) and half would be black (Cc). Forgetting the albino gene, the black cat would not be carrying white at all (ww), the pure white cat would be dominant (WW), and all the offspring would be white (Ww). In life I would say the purewhite cat is most likely dominant and if the black cat carries the albino allele or not it makes no difference; all offspring would be white.
In pea plants purple flowers are dominant to white flowers if two white flowered plants are cross what percentage offspring will be white folwered?
75%
Why did the orchestra get an r rating?
Too Much Sax and Violins
What is a possible gamete for Ww?
The possible gametes produced by an individual with the genotype Ww will be W and w.
What is a hybrid offspring?
ex: Aa,Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, Ww, Xx, Yy, Zz.
