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ollegr [7]
3 years ago
8

Please help fast!!

Biology
2 answers:
Dima020 [189]3 years ago
6 0

What is the probability of having red-green color blindness for the cross that is represented by the Punnett square?

0 percent

25 percent

50 percent

75 percent

Answer B or 25%

just took the test good luck on your test

inysia [295]3 years ago
3 0

Answer:

The correct answer would be b) 25 percent.

In females, X-linked recessive disorder is expressed only when the mutated gene is present in both the X chromosomes whereas in males presence of only one copy of mutated gene is sufficient to cause the disease as they have only one X chromosome.

Now the given cross will results in the production of:

  • Two daughters- one is homozygous dominant (X^{B}X^{B}) and other is heterozygous dominant X^{B}X^{b}
  • Two sons- one carries dominant gene (X^{B}Y) and other carries recessive or mutated gene (X^{b}Y).

From the test, it is clear that only one son out of 4 offspring carries the disease.

Hence, the probability will come out to be 1/4 = 0.25 or 25 percent.


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Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offsprin
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Answer:

The correct answer would be 2 in 4.

According to the question Xo and XO show codominance and express themselves completely when present in heterozygous condition. Cats bearing XoXO show patchwork of black and orange fur and are called tortoiseshell cats.

Xo codes for orange color fur and XO codes for black color fur. In addition, Y chromosome does not contain any gene associated with fur color.

Now, genotype of mother cat is XOXO (orange fur). So, the gametes formed would be XO only.

The genotype of father cat is XoY(black fur). So, the gametes would be Xo and Y.

The cross would lead to the formation of two male cats each having XOY as their genotype and two female cats each with XOXo as their genotype.

Hence, both the male cats would show orange fur and both the female cats would show patchwork of orange and black fur.

Therefore, we can conclude that 2 out of 4 would exhibit tortoiseshell coloring.

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Animals move from place to place because -

1)in search of food and shelter.
2)to <span>protect themselves against adverse climatic conditions.
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A heron, a large wading bird, is hunting in a pond that contains three types of prey: fish, frogs, and snakes. All three types o
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The preferred prey item would be frogs.

What is optimal foraging theory?

It is a theory in ecology that proposes that predating animals that get the most energy from minimal efforts are favored by natural selection.

In order words, selection forces prefer investing minimum energy in order to extract maximally available energy.

In this case, the heron needs to use the lowest time to harvest the maximum energy possible. Since all the preys offer the same amount of energy, the one that requires the lowest time would be preferable for the heron.

In other words, frogs would be the most preferable prey.

More on foraging theory can be found here: brainly.com/question/16970714

#SPJ12

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