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Which among the males and females are homogametic?
They have XX chromosomes as their sex chromosome (44+XX). They produce ova which contain only X chromosome (22+X). Males are heterogametic.
They have XX chromosomes as their sex chromosome (44+XX). They produce ova which contain only X chromosome (22+X). Males are heterogametic.
See lesshow do genes control the traits?
Genes are capable of controlling traits by means of gene expression. The gene's DNA comprises a nucleotide sequence that corresponds to a particular amino acid sequence of a protein through the genetic code, that comprises a set of three codons each specifying a particular amino acid.
Genes are capable of controlling traits by means of gene expression. The gene’s DNA comprises a nucleotide sequence that corresponds to a particular amino acid sequence of a protein through the genetic code, that comprises a set of three codons each specifying a particular amino acid.
See lessWhy variations are useful for the survival of a species over time?
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die.
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die.
See lessWhy an offspring of human beings is not a true copy of his parents?
In sexual reproduction, the offspring of a human being is not a true copy of its parents because it inherits half of its genetic material from each parent. During the formation of gametes (sperm and egg cells), the genetic material undergoes a process of recombination known as crossing over.
In sexual reproduction, the offspring of a human being is not a true copy of its parents because it inherits half of its genetic material from each parent. During the formation of gametes (sperm and egg cells), the genetic material undergoes a process of recombination known as crossing over.
See lessName the mismatched pair fo sex chromosomes in humans.
The sex chromosomes of both males and females are respectively XY and XX. Male sex chromosomes are known as mismatched pairs because one is a normal size called the X chromosome and the other is a short size called the Y chromosome.
The sex chromosomes of both males and females are respectively XY and XX. Male sex chromosomes are known as mismatched pairs because one is a normal size called the X chromosome and the other is a short size called the Y chromosome.
See lessReproduction of leads to variations. How?
Sexual reproduction results in genetic variation, or genetic differences, between parents and offspring. Offspring inherit one set of chromosomes from each parent. So, an offspring has a mixture of chromosomes (and alleles) from its two parents. Sexual reproduction also results in genetic variationRead more
Sexual reproduction results in genetic variation, or genetic differences, between parents and offspring. Offspring inherit one set of chromosomes from each parent. So, an offspring has a mixture of chromosomes (and alleles) from its two parents. Sexual reproduction also results in genetic variation among siblings.
See lessWhy newly formed DNA copies may not be identical at times?
During the process of replication of DNA, most of the base sequences in the new copies are identical to those in the parent DNA. However, some changes can occur either due to mutation or due to minor errors during replication process. Thus, the newly formed DNA copies may not be identical at times.
During the process of replication of DNA, most of the base sequences in the new copies are identical to those in the parent DNA. However, some changes can occur either due to mutation or due to minor errors during replication process. Thus, the newly formed DNA copies may not be identical at times.
See lessIn any population, no two individuals are absolutely similar. Why?
No two individual are absolutely similar because there are endless possible interactions between accumulated genes from past generations and interplay with the current circumstances of the surrounding environment.
No two individual are absolutely similar because there are endless possible interactions between accumulated genes from past generations and interplay with the current circumstances of the surrounding environment.
See lessWhy did Mendel select pea plant for conducting his experimental on inheritance?
Mendel choose pea plants for his experiments because of the following reasons: (i) The flowers of this plant are bisexual. (ii) They are self-pollinating, and thus, self and cross-pollination can easily be performed. (iii) The different physical characteristics were easy to recognize and study.
Mendel choose pea plants for his experiments because of the following reasons:
See less(i) The flowers of this plant are bisexual.
(ii) They are self-pollinating, and thus, self and cross-pollination can easily be performed.
(iii) The different physical characteristics were easy to recognize and study.
Why is the progeny always tall,when a tall pea plant is crossed with a short pea plant?
The alleles that are suppressed are known as recessive traits while that determines the trait are known as dominant traits. A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because tallness is the dominant trait. Thus, tallness is the dominantRead more
The alleles that are suppressed are known as recessive traits while that determines the trait are known as dominant traits. A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because tallness is the dominant trait. Thus, tallness is the dominant trait.
See less