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Tomtit [17]
2 years ago
11

For most genes on the human x chromosome, what percent of xy males with a mutant allele on the x chromosome will express the mut

ant phenotype?.
Biology
1 answer:
LuckyWell [14K]2 years ago
6 0

For most genes on the human X chromosome, 100% of XY males with mutant allele on the X chromosome will express the mutant phenotype.

50 % of human sperm cells that carry an X chromosome. There is 50 % chances that daughter of any male will not carry the gene and can't pass it on and 50 % chance that sons do not have the gene and it will be healthy. 50% chance that son have inherited the gene and express the trait or disorder.

If a Egg is fertilizes by sperm with X chromosome then zygote will be a female ' XX'. If the Egg is fertilizes by sperm with Y chromosome , then zygote will be male 'XY'.

To learn more about human sperm cells here

brainly.com/question/276208

#SPJ4

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The wild-type color of horned beetles is black, although other colors are known. A black horned beetle from a pure-breeding stra
Kisachek [45]

One hypothesis that explains the result is : A) Two genes are involved with  12:3:1  epistasis, such that A_B_ and A_bb are black, aaB_ is brown,and aabb is green.

Explanation:

  • This is a case of Dominant Epistasis.
  • When two genes are involved and presence of dominant allele of one gene masks the effect of either allele of the second gene then the epistasis is termed as dominant epistasis.
  • In the given case black :brown: green ratio is approximately equal to  12:3:1.
  • Here presence of a dominant A allele that is responsible for the black colour masks the effect of either allele of B. Therefore A_B_ and A_bb produces black beetles
  • Again , absence of dominant A allows B to express itself and Brown beetles are produced thus aaB_ is brown.
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4 0
3 years ago
Question 37 (2 points) Saved
Veronika [31]

Answer: The non-vascular plant group are

A) Chlorophytes

B) Charophytes

C) Bryophytes

Explanation:

Charophytes, Chlorophytes and

Bryophytes are those plants having multicellular body and doesn't have a vascular bundle i. e. xylum and phloem. In vascular plants, xylum ia is responsible for the transportation of water and phloem is responsible for the transportation of food materials from one part to another. These bundles are absent in Chlorophytes, Charophytes and Bryophytes.

3 0
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PHET Energy Skate Park Simulation .Consider this equation: gravitational potential energy = mgh. Which of those variables is cha
Fed [463]

Answer:

h - height

Explanation:

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m stands for mass. Mass doesn't change in physics

g stands for gravitational acceleration. It is a constant.

h stands for height. When the skater moves up and down the track the height from the ground changes. Therefore this variable does change.

8 0
2 years ago
Plz hurry, drag the characteristics to the rna and dna columns where they belong
Luda [366]

Answer:

RNA - single stranded, contains uracil, and protein synthesis.

DNA - Double stranded, contains thymine, and stored genetic material.

Hope that helps! :)

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3 years ago
What is present in the soil that makes nitrogen<br> directly available to plants?
lubasha [3.4K]
In order for plants to assimilate nitrogen directly into their system, the nitrogen must be in the form of nitrates. Nitrogen in the air and ammonia from decayed matter in the soil is converted to ammonium by decomposers and nitrogen-fixing bacteria. The ammonium is further nitrified to nitrates by nitrifying bacteria. Finally, the nitrates can then absorbed by the plants.
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