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4 years ago

Which statement describes Mendel’s hypotheses regarding gametes?

2 answers:

7 0

The principle of segregation given by Gregor Mendel based on his experiments with the pea plants states that alleles of a gene for any trait are segregated during the formation of the gametes. Therefore, a gamete contains only one allele of a gene. When the male and female gamete combines during fertilization, the two alleles (one from each gamete) combine to form the gene.

Hence, the correct answer is 'Option B - A gamete carries one allele for a gene'.

Naya [18.7K]4 years ago

6 0

Answer: The correct answer is- B. A gamete carries one allele for a gene.

Gamete ( also called sex cell or reproductive cell) is a haploid cell ( having half number of chromosome as compared to the parent cell) that is produced through a cell division, termed as meiosis in sexually reproducing organisms.

According to Mendel's second law of inheritance that is law of segregation,

For every trait/ characteristic of an individual, there are two variant forms of a gene (called alleles) that are separated from one another so that every gamete possesses one allele. This law is also known as law of purity of gametes.

Thus, option B) is the right answer.

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A frog may at first be startled by tree branches swaying in the wind, but it soon stops responding to these kinds of unimportant

bagirrra123 [75]

Answer:

Habituation.

Explanation:

Habituation may be defined as a type of non associative learning. This type of learning reduces the innate response of an individual towards the repeated or prolonged time of the stimulation.

The frog first respond to the tree branches swaying in the wind. After some time the frog does not respond because of the prolonged or repeated stimulus of the environment. Hence, frog shows the lack of response due to habituation.

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3 years ago

Natural selection of favorable adaptations in organisms often results in

MrRissso [65]

This results in Evolution. Organisms will adapt to their surroundings in the form of evolution.

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4 years ago

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URGENT PLEASE ANSWER Jesi is on vacation and visited a seafood restaurant to eat a shrimp dinner. About thirty minutes after eat

dedylja [7]

1. Jesi is on vacation and visited a seafood restaurant to eat a shrimp dinner. About thirty minutes after eating, she begins to feel ill and her stomach is rumbling. Shortly after, she begins to vomit. Jesi's body is experiencing a reaction to an ________ stimulus.
internal response

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The parasympathetic nervous system senses the danger and the sympathetic nervous system responds by releasing adrenaline.

3. Which of the following scenarios is the best example of positive feedback?

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3 years ago

The shape of a protein molecule is influenced by

Rus_ich [418]

Answer:

The answer is C. its sequence of amino acids.

The protein's shape is influenced by its sequence of amino acids or primary structure.

Explanation:

The primary structure of a protein molecule is dependent on the amino acid chain sequence it has. The amino acid chain's linear structure is composed of covalently bonded amino acids via peptide bonds. This serves as the overall backbone of the protein.

<h3>Additional notes: </h3>

Secondary structure of protein

It defines the 3-dimensional shape of the locally folded polypeptide. They come in two forms, the alpha helices and beta sheets. During the formation of the primary structure, acidic and basic amino residues may cause kinks and turns, re-configuring the 3-D shape of the local polypeptide.

Tertiary structure of protein

This determines the overall 3-dimensional structure of the protein. The structure is due to the linking of the R groups of the related amino acids, hydrophobic bonds, and disulfide bonds. These bonds are highly stable and are not easily changed or destroyed.

Quaternary structure of protein

It is a structure that consists of multiple folded polypeptide chains or subunits. This allows the protein to have multiple functions. Non-covalent forces keep these structures together, making it prone to rapid conformational changes.

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4 years ago

Which organism would not carry out cell respiration

olga nikolaevna [1]

Answer:

D. Bear

Explanation:

The answer is bear because a bear is an animal. Everything but animals can carry out cellular respiration.

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4 years ago