Answer:
D. A silent variant near the 5' end of the TBX1 gene.
Explanation:
TBX1 gene is wild type human being. It gives instructions for making protein called T-box 1. It plays an important role in tissue formation and organs during embryonic development.
Answer:
Orchids have some unique features which help them in the evolutionary race. They produce masses of pollen (which improves the chances of pollination), very light seeds (which makes them easier to spread) and can grow on other plants using them to support their own growth.
Answer: Your friend has suffered a Second Degree burn.
If we are performing a cross involving seed color in garden pea plants and if we cross true-breeding parents with green seeds and yellow seeds then the F1 offsprings will have yellow seeds.
- Since yellow seeds are dominant over the green seeds therefore in the first filial generation, all plants will have yellow seeds according to the Mendel's Law of Dominance.
- The Mendel's Law of Dominance states that if two parents from two different pure-breeding lines with contrasting traits of a character are crossed, then only one of the traits appear in the filial 1 generation and that trait is the dominant trait. For example, having yellow seeds is the dominant trait in this case.
Thus, if we are performing a cross involving seed color in garden pea plants and if we cross true-breeding parents with green seeds and yellow seeds then the F1 offsprings will have yellow seeds.
Learn more about The Mendel's Law of Dominance here: brainly.com/question/14655171
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Answer:
From the given choices, the most appropriate answer would be B. Anaphrase 1.
Anaphase I is the stage of meiosis I in which homologous chromosomes are pulled towards opposite poles with the help of spindle fibers.
The chromosomal defect which can occur in this stage is "unequal distribution of chromosomes in two daughter cells".
It may occur when the spindle fiber fails to attach to a particular chromosome.
It leads to the production of daughter cell or gamete with extra or decreased number of chromosomes.
When these types of gametes fertilize with other gametes, it may result in aneuploidy in the resulting offspring.
